18875396 has 6 divisors (see below), whose sum is σ = 33031950. Its totient is φ = 9437696.

The previous prime is 18875393. The next prime is 18875399. The reversal of 18875396 is 69357881.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18875393) and next prime (18875399).

It can be written as a sum of positive squares in only one way, i.e., 17106496 + 1768900 = 4136^2 + 1330^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18875396.

It is not an unprimeable number, because it can be changed into a prime (18875393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2359421 + ... + 2359428.

It is an arithmetic number, because the mean of its divisors is an integer number (5505325).

Almost surely, 2^18875396 is an apocalyptic number.

It is an amenable number.

18875396 is a deficient number, since it is larger than the sum of its proper divisors (14156554).

18875396 is a wasteful number, since it uses less digits than its factorization.

18875396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4718853 (or 4718851 counting only the distinct ones).

The product of its digits is 362880, while the sum is 47.

The square root of 18875396 is about 4344.5823734854. The cubic root of 18875396 is about 266.2555630804.

The spelling of 18875396 in words is "eighteen million, eight hundred seventy-five thousand, three hundred ninety-six".