18380708 has 12 divisors (see below), whose sum is σ = 32215260. Its totient is φ = 9176352.

The previous prime is 18380707. The next prime is 18380729. The reversal of 18380708 is 80708381.

It can be written as a sum of positive squares in 2 ways, for example, as 13191424 + 5189284 = 3632^2 + 2278^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18380701) 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, 203 + ... + 6066.

It is an arithmetic number, because the mean of its divisors is an integer number (2684605).

Almost surely, 2^18380708 is an apocalyptic number.

It is an amenable number.

18380708 is a deficient number, since it is larger than the sum of its proper divisors (13834552).

18380708 is a wasteful number, since it uses less digits than its factorization.

18380708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7006 (or 7004 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 18380708 is about 4287.2727928136. The cubic root of 18380708 is about 263.9089255790.

The spelling of 18380708 in words is "eighteen million, three hundred eighty thousand, seven hundred eight".