1097910787 has 18 divisors (see below), whose sum is σ = 1168018236. Its totient is φ = 1031418360.

The previous prime is 1097910767. The next prime is 1097910799. The reversal of 1097910787 is 7870197901.

It is not a de Polignac number, because 1097910787 - 2⁷ = 1097910659 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1097910787.

It is not an unprimeable number, because it can be changed into a prime (1097910707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6735568 + ... + 6735730.

It is an arithmetic number, because the mean of its divisors is an integer number (64889902).

Almost surely, 2^1097910787 is an apocalyptic number.

1097910787 is a deficient number, since it is larger than the sum of its proper divisors (70107449).

1097910787 is an frugal number, since it uses more digits than its factorization.

1097910787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 49.

The square root of 1097910787 is about 33134.7368632980. The cubic root of 1097910787 is about 1031.6261700487.

The spelling of 1097910787 in words is "one billion, ninety-seven million, nine hundred ten thousand, seven hundred eighty-seven".