77018538 has 16 divisors (see below), whose sum is σ = 154204416. Its totient is φ = 25644960.

The previous prime is 77018521. The next prime is 77018567. The reversal of 77018538 is 83581077.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 77018496 and 77018505.

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, 531 + ... + 12422.

It is an arithmetic number, because the mean of its divisors is an integer number (9637776).

Almost surely, 2^77018538 is an apocalyptic number.

77018538 is an abundant number, since it is smaller than the sum of its proper divisors (77185878).

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

77018538 is a wasteful number, since it uses less digits than its factorization.

77018538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13949.

The product of its (nonzero) digits is 47040, while the sum is 39.

The square root of 77018538 is about 8776.0206244060. The cubic root of 77018538 is about 425.4662251574.

The spelling of 77018538 in words is "seventy-seven million, eighteen thousand, five hundred thirty-eight".