45190978 has 16 divisors (see below), whose sum is σ = 77986944. Its totient is φ = 19238400.

The previous prime is 45190969. The next prime is 45190997. The reversal of 45190978 is 87909154.

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, 8575 + ... + 12802.

It is an arithmetic number, because the mean of its divisors is an integer number (4874184).

Almost surely, 2^45190978 is an apocalyptic number.

45190978 is a deficient number, since it is larger than the sum of its proper divisors (32795966).

45190978 is a wasteful number, since it uses less digits than its factorization.

45190978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21537.

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

The square root of 45190978 is about 6722.4235213203. The cubic root of 45190978 is about 356.1917968729.

The spelling of 45190978 in words is "forty-five million, one hundred ninety thousand, nine hundred seventy-eight".