1097980658 has 16 divisors (see below), whose sum is σ = 1704591000. Its totient is φ = 529802112.

The previous prime is 1097980651. The next prime is 1097980673. The reversal of 1097980658 is 8560897901.

It can be written as a sum of positive squares in 4 ways, for example, as 640747969 + 457232689 = 25313^2 + 21383^2 .

It is a super-2 number, since 2×1097980658² = 2411123050684225928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1097980651) 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, 177278 + ... + 183366.

Almost surely, 2^1097980658 is an apocalyptic number.

1097980658 is a deficient number, since it is larger than the sum of its proper divisors (606610342).

1097980658 is a wasteful number, since it uses less digits than its factorization.

1097980658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9229.

The product of its (nonzero) digits is 1088640, while the sum is 53.

The square root of 1097980658 is about 33135.7911932098. The cubic root of 1097980658 is about 1031.6480538010.

The spelling of 1097980658 in words is "one billion, ninety-seven million, nine hundred eighty thousand, six hundred fifty-eight".