45189970 has 16 divisors (see below), whose sum is σ = 92962368. Its totient is φ = 15493680.

The previous prime is 45189941. The next prime is 45189979. The reversal of 45189970 is 7998154.

It is not an unprimeable number, because it can be changed into a prime (45189979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322716 + ... + 322855.

It is an arithmetic number, because the mean of its divisors is an integer number (5810148).

Almost surely, 2^45189970 is an apocalyptic number.

45189970 is an abundant number, since it is smaller than the sum of its proper divisors (47772398).

45189970 is a wasteful number, since it uses less digits than its factorization.

45189970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645585.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 45189970 is about 6722.3485479407. The cubic root of 45189970 is about 356.1891485272.

The spelling of 45189970 in words is "forty-five million, one hundred eighty-nine thousand, nine hundred seventy".