1097926257 has 8 divisors (see below), whose sum is σ = 1478396160. Its totient is φ = 724703600.

The previous prime is 1097926213. The next prime is 1097926261. The reversal of 1097926257 is 7526297901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1097926257 - 2²⁸ = 829490801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1097926957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1811457 + ... + 1812062.

It is an arithmetic number, because the mean of its divisors is an integer number (184799520).

Almost surely, 2^1097926257 is an apocalyptic number.

It is an amenable number.

1097926257 is a deficient number, since it is larger than the sum of its proper divisors (380469903).

1097926257 is a wasteful number, since it uses less digits than its factorization.

1097926257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3623623.

The product of its (nonzero) digits is 476280, while the sum is 48.

The square root of 1097926257 is about 33134.9703032914. The cubic root of 1097926257 is about 1031.6310153671.

The spelling of 1097926257 in words is "one billion, ninety-seven million, nine hundred twenty-six thousand, two hundred fifty-seven".