45164919 has 32 divisors (see below), whose sum is σ = 66528000. Its totient is φ = 27143424.

The previous prime is 45164909. The next prime is 45164929. The reversal of 45164919 is 91946154.

It is an interprime number because it is at equal distance from previous prime (45164909) and next prime (45164929).

It is not a de Polignac number, because 45164919 - 2⁵ = 45164887 is a prime.

It is a super-2 number, since 2×45164919² = 4079739816553122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45164909) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 146964 + ... + 147270.

It is an arithmetic number, because the mean of its divisors is an integer number (2079000).

Almost surely, 2^45164919 is an apocalyptic number.

45164919 is a deficient number, since it is larger than the sum of its proper divisors (21363081).

45164919 is a wasteful number, since it uses less digits than its factorization.

45164919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447.

The product of its digits is 38880, while the sum is 39.

The square root of 45164919 is about 6720.4850271390. The cubic root of 45164919 is about 356.1233187006.

The spelling of 45164919 in words is "forty-five million, one hundred sixty-four thousand, nine hundred nineteen".