18953012 has 54 divisors (see below), whose sum is σ = 38253222. Its totient is φ = 8209344.

The previous prime is 18952961. The next prime is 18953021. The reversal of 18953012 is 21035981.

It can be written as a sum of positive squares in 3 ways, for example, as 256036 + 18696976 = 506^2 + 4324^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 357578 + ... + 357630.

It is an arithmetic number, because the mean of its divisors is an integer number (708393).

Almost surely, 2^18953012 is an apocalyptic number.

It is an amenable number.

18953012 is an abundant number, since it is smaller than the sum of its proper divisors (19300210).

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

18953012 is a wasteful number, since it uses less digits than its factorization.

18953012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 91 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 18953012 is about 4353.5057137897. The cubic root of 18953012 is about 266.6200133663.

Adding to 18953012 its reverse (21035981), we get a palindrome (39988993).

The spelling of 18953012 in words is "eighteen million, nine hundred fifty-three thousand, twelve".