797277138 has 24 divisors (see below), whose sum is σ = 1854890352. Its totient is φ = 227793384.

The previous prime is 797277109. The next prime is 797277181. The reversal of 797277138 is 831772797.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1355620 + ... + 1356207.

It is an arithmetic number, because the mean of its divisors is an integer number (77287098).

Almost surely, 2^797277138 is an apocalyptic number.

797277138 is an abundant number, since it is smaller than the sum of its proper divisors (1057613214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

797277138 is a wasteful number, since it uses less digits than its factorization.

797277138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2711846 (or 2711839 counting only the distinct ones).

The product of its digits is 1037232, while the sum is 51.

The square root of 797277138 is about 28236.0963661764. The cubic root of 797277138 is about 927.2633690870.

The spelling of 797277138 in words is "seven hundred ninety-seven million, two hundred seventy-seven thousand, one hundred thirty-eight".