1097025940 has 96 divisors (see below), whose sum is σ = 2479196160. Its totient is φ = 406809216.

The previous prime is 1097025931. The next prime is 1097025991. The reversal of 1097025940 is 495207901.

It is a self number, because there is not a number n which added to its sum of digits gives 1097025940.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2252377 + ... + 2252863.

It is an arithmetic number, because the mean of its divisors is an integer number (25824960).

Almost surely, 2^1097025940 is an apocalyptic number.

1097025940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1097025940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1239598080).

1097025940 is an abundant number, since it is smaller than the sum of its proper divisors (1382170220).

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

1097025940 is a wasteful number, since it uses less digits than its factorization.

1097025940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661 (or 659 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 1097025940 is about 33121.3819156146. The cubic root of 1097025940 is about 1031.3489536390.

The spelling of 1097025940 in words is "one billion, ninety-seven million, twenty-five thousand, nine hundred forty".