73981158 has 16 divisors (see below), whose sum is σ = 148304640. Its totient is φ = 24603336.

The previous prime is 73981157. The next prime is 73981169. The reversal of 73981158 is 85118937.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73981151) 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, 11410 + ... + 16677.

It is an arithmetic number, because the mean of its divisors is an integer number (9269040).

Almost surely, 2^73981158 is an apocalyptic number.

73981158 is an abundant number, since it is smaller than the sum of its proper divisors (74323482).

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

73981158 is a wasteful number, since it uses less digits than its factorization.

73981158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28531.

The product of its digits is 60480, while the sum is 42.

The square root of 73981158 is about 8601.2300283157. The cubic root of 73981158 is about 419.7980094482.

The spelling of 73981158 in words is "seventy-three million, nine hundred eighty-one thousand, one hundred fifty-eight".