797149881 has 12 divisors (see below), whose sum is σ = 1256115120. Its totient is φ = 483121080.

The previous prime is 797149831. The next prime is 797149901. The reversal of 797149881 is 188941797.

797149881 is a `hidden beast` number, since 7 + 9 + 71 + 498 + 81 = 666.

It is not a de Polignac number, because 797149881 - 2¹³ = 797141689 is a prime.

It is a super-2 number, since 2×797149881² = 1270895865556628322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (797149811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4025911 + ... + 4026108.

It is an arithmetic number, because the mean of its divisors is an integer number (104676260).

Almost surely, 2^797149881 is an apocalyptic number.

It is an amenable number.

797149881 is a deficient number, since it is larger than the sum of its proper divisors (458965239).

797149881 is a wasteful number, since it uses less digits than its factorization.

797149881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8052036 (or 8052033 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 54.

The square root of 797149881 is about 28233.8428309006. The cubic root of 797149881 is about 927.2140315657.

The spelling of 797149881 in words is "seven hundred ninety-seven million, one hundred forty-nine thousand, eight hundred eighty-one".