619269841969 has 3 divisors (see below), whose sum is σ = 619270628907. Its totient is φ = 619269055032.

The previous prime is 619269841921. The next prime is 619269841979. The reversal of 619269841969 is 969148962916.

The square root of 619269841969 is 786937.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 314883711025 + 304386130944 = 561145^2 + 551712^2 .

It is not a de Polignac number, because 619269841969 - 2⁹ = 619269841457 is a prime.

It is a super-2 number, since 2×619269841969² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 619269841898 and 619269841907.

It is not an unprimeable number, because it can be changed into a prime (619269841909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 393469 + ... + 1180405.

It is an arithmetic number, because the mean of its divisors is an integer number (206423542969).

Almost surely, 2^619269841969 is an apocalyptic number.

619269841969 is the 786937-th square number.

619269841969 is the 393469-th centered octagonal number.

It is an amenable number.

619269841969 is a deficient number, since it is larger than the sum of its proper divisors (786938).

619269841969 is an frugal number, since it uses more digits than its factorization.

619269841969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573874 (or 786937 counting only the distinct ones).

The product of its digits is 90699264, while the sum is 70.

The spelling of 619269841969 in words is "six hundred nineteen billion, two hundred sixty-nine million, eight hundred forty-one thousand, nine hundred sixty-nine".