18940231416 has 32 divisors (see below), whose sum is σ = 47423802240. Its totient is φ = 6303647328.

The previous prime is 18940231411. The next prime is 18940231423. The reversal of 18940231416 is 61413204981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18940231411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 594346 + ... + 625401.

It is an arithmetic number, because the mean of its divisors is an integer number (1481993820).

Almost surely, 2^18940231416 is an apocalyptic number.

It is an amenable number.

18940231416 is an abundant number, since it is smaller than the sum of its proper divisors (28483570824).

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

18940231416 is a wasteful number, since it uses less digits than its factorization.

18940231416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220403 (or 1220399 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The spelling of 18940231416 in words is "eighteen billion, nine hundred forty million, two hundred thirty-one thousand, four hundred sixteen".