619893252889 has 3 divisors (see below), whose sum is σ = 619894040223. Its totient is φ = 619892465556.

The previous prime is 619893252773. The next prime is 619893252943. The reversal of 619893252889 is 988252398916.

The square root of 619893252889 is 787333.

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., 590615305225 + 29277947664 = 768515^2 + 171108^2 .

It is not a de Polignac number, because 619893252889 - 2¹³ = 619893244697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (619891252889) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 393667 + ... + 1180999.

It is an arithmetic number, because the mean of its divisors is an integer number (206631346741).

Almost surely, 2^619893252889 is an apocalyptic number.

619893252889 is the 787333-rd square number.

619893252889 is the 393667-th centered octagonal number.

It is an amenable number.

619893252889 is a deficient number, since it is larger than the sum of its proper divisors (787334).

619893252889 is an frugal number, since it uses more digits than its factorization.

619893252889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574666 (or 787333 counting only the distinct ones).

The product of its digits is 134369280, while the sum is 70.

The spelling of 619893252889 in words is "six hundred nineteen billion, eight hundred ninety-three million, two hundred fifty-two thousand, eight hundred eighty-nine".