18311060542 has 4 divisors (see below), whose sum is σ = 27466590816. Its totient is φ = 9155530270.

The previous prime is 18311060507. The next prime is 18311060609. The reversal of 18311060542 is 24506011381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24506011381 = 70051 ⋅349831.

It is a congruent number.

It is an unprimeable number.

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, 4577765134 + ... + 4577765137.

It is an arithmetic number, because the mean of its divisors is an integer number (6866647704).

Almost surely, 2^18311060542 is an apocalyptic number.

18311060542 is a deficient number, since it is larger than the sum of its proper divisors (9155530274).

18311060542 is an equidigital number, since it uses as much as digits as its factorization.

18311060542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9155530273.

The product of its (nonzero) digits is 5760, while the sum is 31.

The spelling of 18311060542 in words is "eighteen billion, three hundred eleven million, sixty thousand, five hundred forty-two".