18933283140 has 48 divisors (see below), whose sum is σ = 53025016128. Its totient is φ = 5047749504.

The previous prime is 18933283133. The next prime is 18933283147. The reversal of 18933283140 is 4138233981.

It is an interprime number because it is at equal distance from previous prime (18933283133) and next prime (18933283147).

It is a junction number, because it is equal to n+sod(n) for n = 18933283092 and 18933283101.

It is not an unprimeable number, because it can be changed into a prime (18933283147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255999 + ... + 321561.

It is an arithmetic number, because the mean of its divisors is an integer number (1104687836).

Almost surely, 2^18933283140 is an apocalyptic number.

18933283140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18933283140 is an abundant number, since it is smaller than the sum of its proper divisors (34091732988).

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

18933283140 is a wasteful number, since it uses less digits than its factorization.

18933283140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70388 (or 70386 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The spelling of 18933283140 in words is "eighteen billion, nine hundred thirty-three million, two hundred eighty-three thousand, one hundred forty".