18941908 has 12 divisors (see below), whose sum is σ = 33182100. Its totient is φ = 9461312.

The previous prime is 18941873. The next prime is 18941921. The reversal of 18941908 is 80914981.

It can be written as a sum of positive squares in 2 ways, for example, as 9132484 + 9809424 = 3022^2 + 3132^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3768 + ... + 7216.

It is an arithmetic number, because the mean of its divisors is an integer number (2765175).

Almost surely, 2^18941908 is an apocalyptic number.

It is an amenable number.

18941908 is a deficient number, since it is larger than the sum of its proper divisors (14240192).

18941908 is a wasteful number, since it uses less digits than its factorization.

18941908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4826 (or 4824 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 18941908 is about 4352.2302328806. The cubic root of 18941908 is about 266.5679349775.

The spelling of 18941908 in words is "eighteen million, nine hundred forty-one thousand, nine hundred eight".