45973618 has 4 divisors (see below), whose sum is σ = 68960430. Its totient is φ = 22986808.

The previous prime is 45973607. The next prime is 45973643. The reversal of 45973618 is 81637954.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81637954 = 2 ⋅40818977.

It can be written as a sum of positive squares in only one way, i.e., 31888609 + 14085009 = 5647^2 + 3753^2 .

It is a super-2 number, since 2×45973618² = 4227147104019848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11493403 + ... + 11493406.

Almost surely, 2^45973618 is an apocalyptic number.

45973618 is a deficient number, since it is larger than the sum of its proper divisors (22986812).

45973618 is a wasteful number, since it uses less digits than its factorization.

45973618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22986811.

The product of its digits is 181440, while the sum is 43.

The square root of 45973618 is about 6780.3847973400. The cubic root of 45973618 is about 358.2362754741.

The spelling of 45973618 in words is "forty-five million, nine hundred seventy-three thousand, six hundred eighteen".