18069948 has 36 divisors (see below), whose sum is σ = 49191688. Its totient is φ = 5559840.

The previous prime is 18069917. The next prime is 18069983. The reversal of 18069948 is 84996081.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18838 + ... + 19773.

Almost surely, 2^18069948 is an apocalyptic number.

18069948 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18069948 is an abundant number, since it is smaller than the sum of its proper divisors (31121740).

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

18069948 is a wasteful number, since it uses less digits than its factorization.

18069948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38634 (or 38629 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 18069948 is about 4250.8761449847. The cubic root of 18069948 is about 262.4131740052.

The spelling of 18069948 in words is "eighteen million, sixty-nine thousand, nine hundred forty-eight".