145809164 has 12 divisors (see below), whose sum is σ = 255582600. Its totient is φ = 72785568.

The previous prime is 145809149. The next prime is 145809217. The reversal of 145809164 is 461908541.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26969 + ... + 31920.

It is an arithmetic number, because the mean of its divisors is an integer number (21298550).

Almost surely, 2^145809164 is an apocalyptic number.

It is an amenable number.

145809164 is a deficient number, since it is larger than the sum of its proper divisors (109773436).

145809164 is a wasteful number, since it uses less digits than its factorization.

145809164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59512 (or 59510 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 145809164 is about 12075.1465415539. The cubic root of 145809164 is about 526.3342196837.

The spelling of 145809164 in words is "one hundred forty-five million, eight hundred nine thousand, one hundred sixty-four".