18973542 has 32 divisors (see below), whose sum is σ = 43593984. Its totient is φ = 5392800.

The previous prime is 18973531. The next prime is 18973553. The reversal of 18973542 is 24537981.

It is an interprime number because it is at equal distance from previous prime (18973531) and next prime (18973553).

It is a self number, because there is not a number n which added to its sum of digits gives 18973542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7792 + ... + 9932.

It is an arithmetic number, because the mean of its divisors is an integer number (1362312).

Almost surely, 2^18973542 is an apocalyptic number.

18973542 is an abundant number, since it is smaller than the sum of its proper divisors (24620442).

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

18973542 is a wasteful number, since it uses less digits than its factorization.

18973542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2364.

The product of its digits is 60480, while the sum is 39.

The square root of 18973542 is about 4355.8629455023. The cubic root of 18973542 is about 266.7162466840.

The spelling of 18973542 in words is "eighteen million, nine hundred seventy-three thousand, five hundred forty-two".