18010542 has 16 divisors (see below), whose sum is σ = 39295872. Its totient is φ = 5457720.

The previous prime is 18010501. The next prime is 18010547. The reversal of 18010542 is 24501081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18010547) 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, 136378 + ... + 136509.

It is an arithmetic number, because the mean of its divisors is an integer number (2455992).

Almost surely, 2^18010542 is an apocalyptic number.

18010542 is an abundant number, since it is smaller than the sum of its proper divisors (21285330).

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

18010542 is a wasteful number, since it uses less digits than its factorization.

18010542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272903.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 18010542 is about 4243.8828918810. The cubic root of 18010542 is about 262.1252921319.

The spelling of 18010542 in words is "eighteen million, ten thousand, five hundred forty-two".