18858948 has 12 divisors (see below), whose sum is σ = 44004240. Its totient is φ = 6286312.

The previous prime is 18858947. The next prime is 18858971. The reversal of 18858948 is 84985881.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 18858948.

It is not an unprimeable number, because it can be changed into a prime (18858947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 785778 + ... + 785801.

It is an arithmetic number, because the mean of its divisors is an integer number (3667020).

Almost surely, 2^18858948 is an apocalyptic number.

It is an amenable number.

18858948 is an abundant number, since it is smaller than the sum of its proper divisors (25145292).

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

18858948 is a wasteful number, since it uses less digits than its factorization.

18858948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571586 (or 1571584 counting only the distinct ones).

The product of its digits is 737280, while the sum is 51.

The square root of 18858948 is about 4342.6890287010. The cubic root of 18858948 is about 266.1782023338.

The spelling of 18858948 in words is "eighteen million, eight hundred fifty-eight thousand, nine hundred forty-eight".