18818802 has 24 divisors (see below), whose sum is σ = 40869036. Its totient is φ = 6258336.

The previous prime is 18818791. The next prime is 18818809. The reversal of 18818802 is 20881881.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18224361 + 594441 = 4269^2 + 771^2 .

It is not an unprimeable number, because it can be changed into a prime (18818809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9088 + ... + 10964.

Almost surely, 2^18818802 is an apocalyptic number.

18818802 is an abundant number, since it is smaller than the sum of its proper divisors (22050234).

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

18818802 is a wasteful number, since it uses less digits than its factorization.

18818802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2442 (or 2439 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 36.

The square root of 18818802 is about 4338.0643148759. The cubic root of 18818802 is about 265.9891924680.

The spelling of 18818802 in words is "eighteen million, eight hundred eighteen thousand, eight hundred two".