1097098990 has 96 divisors (see below), whose sum is σ = 2263320576. Its totient is φ = 382112640.

The previous prime is 1097098987. The next prime is 1097098997. The reversal of 1097098990 is 998907901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097098997) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2252527 + ... + 2253013.

It is an arithmetic number, because the mean of its divisors is an integer number (23576256).

Almost surely, 2^1097098990 is an apocalyptic number.

1097098990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1097098990 is an abundant number, since it is smaller than the sum of its proper divisors (1166221586).

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

1097098990 is a wasteful number, since it uses less digits than its factorization.

1097098990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594 (or 581 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 52.

The square root of 1097098990 is about 33122.4846592160. The cubic root of 1097098990 is about 1031.3718453398.

The spelling of 1097098990 in words is "one billion, ninety-seven million, ninety-eight thousand, nine hundred ninety".