73818538 has 4 divisors (see below), whose sum is σ = 110727810. Its totient is φ = 36909268.

The previous prime is 73818527. The next prime is 73818557. The reversal of 73818538 is 83581837.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 72709729 + 1108809 = 8527^2 + 1053^2 .

It is a junction number, because it is equal to n+sod(n) for n = 73818494 and 73818503.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18454633 + ... + 18454636.

Almost surely, 2^73818538 is an apocalyptic number.

73818538 is a deficient number, since it is larger than the sum of its proper divisors (36909272).

73818538 is a wasteful number, since it uses less digits than its factorization.

73818538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36909271.

The product of its digits is 161280, while the sum is 43.

The square root of 73818538 is about 8591.7715286197. The cubic root of 73818538 is about 419.4901939829.

The spelling of 73818538 in words is "seventy-three million, eight hundred eighteen thousand, five hundred thirty-eight".