797185381 has 4 divisors (see below), whose sum is σ = 797262912. Its totient is φ = 797107852.

The previous prime is 797185351. The next prime is 797185399. The reversal of 797185381 is 183581797.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 183581797 = 7 ⋅26225971.

It is a cyclic number.

It is not a de Polignac number, because 797185381 - 2¹⁵ = 797152613 is a prime.

It is a super-2 number, since 2×797185381² = 1271009063360230322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797185351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20461 + ... + 44866.

It is an arithmetic number, because the mean of its divisors is an integer number (199315728).

Almost surely, 2^797185381 is an apocalyptic number.

It is an amenable number.

797185381 is a deficient number, since it is larger than the sum of its proper divisors (77531).

797185381 is a wasteful number, since it uses less digits than its factorization.

797185381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77530.

The product of its digits is 423360, while the sum is 49.

The square root of 797185381 is about 28234.4715020487. The cubic root of 797185381 is about 927.2277954388.

The spelling of 797185381 in words is "seven hundred ninety-seven million, one hundred eighty-five thousand, three hundred eighty-one".