1113437664 has 216 divisors, whose sum is σ = 3415721400. Its totient is φ = 356762880.

The previous prime is 1113437653. The next prime is 1113437671. The reversal of 1113437664 is 4667343111.

It is a tau number, because it is divible by the number of its divisors (216).

It is a super-2 number, since 2×1113437664² = 2479486863227553792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7472662 + ... + 7472810.

It is an arithmetic number, because the mean of its divisors is an integer number (15813525).

Almost surely, 2^1113437664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1113437664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1707860700).

1113437664 is an abundant number, since it is smaller than the sum of its proper divisors (2302283736).

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

1113437664 is an equidigital number, since it uses as much as digits as its factorization.

1113437664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 185 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 1113437664 is about 33368.2133774046. The cubic root of 1113437664 is about 1036.4665787444.

The spelling of 1113437664 in words is "one billion, one hundred thirteen million, four hundred thirty-seven thousand, six hundred sixty-four".