1137396640 has 48 divisors (see below), whose sum is σ = 2689123752. Its totient is φ = 454616064.

The previous prime is 1137396619. The next prime is 1137396643. The reversal of 1137396640 is 466937311.

It can be written as a sum of positive squares in 4 ways, for example, as 1100381584 + 37015056 = 33172^2 + 6084^2 .

It is a super-2 number, since 2×1137396640² = 2587342233366579200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 1137396593 and 1137396602.

It is not an unprimeable number, because it can be changed into a prime (1137396643) 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, 388462 + ... + 391378.

Almost surely, 2^1137396640 is an apocalyptic number.

1137396640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1137396640 is an abundant number, since it is smaller than the sum of its proper divisors (1551727112).

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

1137396640 is a wasteful number, since it uses less digits than its factorization.

1137396640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5369 (or 5361 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 1137396640 is about 33725.3115626824. The cubic root of 1137396640 is about 1043.8481206715.

The spelling of 1137396640 in words is "one billion, one hundred thirty-seven million, three hundred ninety-six thousand, six hundred forty".