145811964 has 24 divisors (see below), whose sum is σ = 340506880. Its totient is φ = 48564144.

The previous prime is 145811929. The next prime is 145811987. The reversal of 145811964 is 469118541.

It is a super-2 number, since 2×145811964² = 42522257691074592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12807 + ... + 21345.

Almost surely, 2^145811964 is an apocalyptic number.

It is an amenable number.

145811964 is an abundant number, since it is smaller than the sum of its proper divisors (194694916).

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

145811964 is a wasteful number, since it uses less digits than its factorization.

145811964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9969 (or 9967 counting only the distinct ones).

The product of its digits is 34560, while the sum is 39.

The square root of 145811964 is about 12075.2624816192. The cubic root of 145811964 is about 526.3375887595.

The spelling of 145811964 in words is "one hundred forty-five million, eight hundred eleven thousand, nine hundred sixty-four".