1165016400 has 60 divisors (see below), whose sum is σ = 3731939712. Its totient is φ = 310670720.

The previous prime is 1165016383. The next prime is 1165016431. The reversal of 1165016400 is 46105611.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 484224 + ... + 486623.

Almost surely, 2^1165016400 is an apocalyptic number.

1165016400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1165016400 is an abundant number, since it is smaller than the sum of its proper divisors (2566923312).

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

1165016400 is a wasteful number, since it uses less digits than its factorization.

1165016400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970868 (or 970857 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1165016400 is about 34132.3365739880. The cubic root of 1165016400 is about 1052.2299997819.

The spelling of 1165016400 in words is "one billion, one hundred sixty-five million, sixteen thousand, four hundred".