18958542 has 16 divisors (see below), whose sum is σ = 39912960. Its totient is φ = 5986872.

The previous prime is 18958501. The next prime is 18958567. The reversal of 18958542 is 24585981.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18958494 and 18958503.

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, 83038 + ... + 83265.

It is an arithmetic number, because the mean of its divisors is an integer number (2494560).

Almost surely, 2^18958542 is an apocalyptic number.

18958542 is an abundant number, since it is smaller than the sum of its proper divisors (20954418).

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

18958542 is a wasteful number, since it uses less digits than its factorization.

18958542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166327.

The product of its digits is 115200, while the sum is 42.

The square root of 18958542 is about 4354.1407878019. The cubic root of 18958542 is about 266.6459417921.

The spelling of 18958542 in words is "eighteen million, nine hundred fifty-eight thousand, five hundred forty-two".