1145612916 has 72 divisors (see below), whose sum is σ = 3397168320. Its totient is φ = 327052080.

The previous prime is 1145612851. The next prime is 1145612933. The reversal of 1145612916 is 6192165411.

1145612916 is a `hidden beast` number, since 1 + 1 + 4 + 561 + 2 + 91 + 6 = 666.

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 23 ways as a sum of consecutive naturals, for example, 930021 + ... + 931251.

Almost surely, 2^1145612916 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 1145612916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1698584160).

1145612916 is an abundant number, since it is smaller than the sum of its proper divisors (2251555404).

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

1145612916 is an equidigital number, since it uses as much as digits as its factorization.

1145612916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2482 (or 1243 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 1145612916 is about 33846.9040829438. The cubic root of 1145612916 is about 1046.3555939724.

The spelling of 1145612916 in words is "one billion, one hundred forty-five million, six hundred twelve thousand, nine hundred sixteen".