18358277038 has 4 divisors (see below), whose sum is σ = 27537415560. Its totient is φ = 9179138518.

The previous prime is 18358277017. The next prime is 18358277039. The reversal of 18358277038 is 83077285381.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18358277039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4589569258 + ... + 4589569261.

It is an arithmetic number, because the mean of its divisors is an integer number (6884353890).

Almost surely, 2^18358277038 is an apocalyptic number.

18358277038 is a deficient number, since it is larger than the sum of its proper divisors (9179138522).

18358277038 is an equidigital number, since it uses as much as digits as its factorization.

18358277038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9179138521.

The product of its (nonzero) digits is 2257920, while the sum is 52.

The spelling of 18358277038 in words is "eighteen billion, three hundred fifty-eight million, two hundred seventy-seven thousand, thirty-eight".