18965148 has 12 divisors (see below), whose sum is σ = 44252040. Its totient is φ = 6321712.

The previous prime is 18965143. The next prime is 18965153. The reversal of 18965148 is 84156981.

It is an interprime number because it is at equal distance from previous prime (18965143) and next prime (18965153).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18965143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 790203 + ... + 790226.

It is an arithmetic number, because the mean of its divisors is an integer number (3687670).

Almost surely, 2^18965148 is an apocalyptic number.

It is an amenable number.

18965148 is an abundant number, since it is smaller than the sum of its proper divisors (25286892).

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

18965148 is a wasteful number, since it uses less digits than its factorization.

18965148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580436 (or 1580434 counting only the distinct ones).

The product of its digits is 69120, while the sum is 42.

The square root of 18965148 is about 4354.8993099726. The cubic root of 18965148 is about 266.6769086344.

The spelling of 18965148 in words is "eighteen million, nine hundred sixty-five thousand, one hundred forty-eight".