45161892 has 18 divisors (see below), whose sum is σ = 114159318. Its totient is φ = 15053952.

The previous prime is 45161887. The next prime is 45161923. The reversal of 45161892 is 29816154.

It can be written as a sum of positive squares in only one way, i.e., 41679936 + 3481956 = 6456^2 + 1866^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1254497 = 45161892 / (4 + 5 + 1 + 6 + 1 + 8 + 9 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 627213 + ... + 627284.

Almost surely, 2^45161892 is an apocalyptic number.

It is an amenable number.

45161892 is an abundant number, since it is smaller than the sum of its proper divisors (68997426).

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

45161892 is a wasteful number, since it uses less digits than its factorization.

45161892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254507 (or 1254502 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 45161892 is about 6720.2598164059. The cubic root of 45161892 is about 356.1153626040.

The spelling of 45161892 in words is "forty-five million, one hundred sixty-one thousand, eight hundred ninety-two".