18077542 has 16 divisors (see below), whose sum is σ = 31080960. Its totient is φ = 7724808.

The previous prime is 18077539. The next prime is 18077593. The reversal of 18077542 is 24577081.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18077498 and 18077507.

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, 3603 + ... + 7009.

It is an arithmetic number, because the mean of its divisors is an integer number (1942560).

Almost surely, 2^18077542 is an apocalyptic number.

18077542 is a deficient number, since it is larger than the sum of its proper divisors (13003418).

18077542 is a wasteful number, since it uses less digits than its factorization.

18077542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3795.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 18077542 is about 4251.7692787827. The cubic root of 18077542 is about 262.4499290741.

The spelling of 18077542 in words is "eighteen million, seventy-seven thousand, five hundred forty-two".