18885302140 has 24 divisors (see below), whose sum is σ = 39710472480. Its totient is φ = 7544342208.

The previous prime is 18885302131. The next prime is 18885302147. The reversal of 18885302140 is 4120358881.

It is a junction number, because it is equal to n+sod(n) for n = 18885302093 and 18885302102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18885302147) 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, 595320 + ... + 626239.

It is an arithmetic number, because the mean of its divisors is an integer number (1654603020).

Almost surely, 2^18885302140 is an apocalyptic number.

18885302140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18885302140 is an abundant number, since it is smaller than the sum of its proper divisors (20825170340).

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

18885302140 is a wasteful number, since it uses less digits than its factorization.

18885302140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222341 (or 1222339 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 40.

The spelling of 18885302140 in words is "eighteen billion, eight hundred eighty-five million, three hundred two thousand, one hundred forty".