619147085881 has 3 divisors (see below), whose sum is σ = 619147872741. Its totient is φ = 619146299022.

The previous prime is 619147085857. The next prime is 619147085903. The reversal of 619147085881 is 188580741916.

The square root of 619147085881 is 786859.

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 is not a de Polignac number, because 619147085881 - 2⁵ = 619147085849 is a prime.

It is a super-2 number, since 2×619147085881² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (619147005881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 393430 + ... + 1180288.

It is an arithmetic number, because the mean of its divisors is an integer number (206382624247).

Almost surely, 2^619147085881 is an apocalyptic number.

619147085881 is the 786859-th square number.

619147085881 is the 393430-th centered octagonal number.

It is an amenable number.

619147085881 is a deficient number, since it is larger than the sum of its proper divisors (786860).

619147085881 is an frugal number, since it uses more digits than its factorization.

619147085881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573718 (or 786859 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 58.

The spelling of 619147085881 in words is "six hundred nineteen billion, one hundred forty-seven million, eighty-five thousand, eight hundred eighty-one".