18850185542 has 16 divisors (see below), whose sum is σ = 29262461760. Its totient is φ = 9096302208.

The previous prime is 18850185539. The next prime is 18850185559. The reversal of 18850185542 is 24558105881.

It is a congruent number.

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, 75518 + ... + 208334.

It is an arithmetic number, because the mean of its divisors is an integer number (1828903860).

Almost surely, 2^18850185542 is an apocalyptic number.

18850185542 is a deficient number, since it is larger than the sum of its proper divisors (10412276218).

18850185542 is a wasteful number, since it uses less digits than its factorization.

18850185542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135295.

The product of its (nonzero) digits is 512000, while the sum is 47.

The spelling of 18850185542 in words is "eighteen billion, eight hundred fifty million, one hundred eighty-five thousand, five hundred forty-two".