18934067240 has 64 divisors (see below), whose sum is σ = 46500480000. Its totient is φ = 6881271040.

The previous prime is 18934067227. The next prime is 18934067261. The reversal of 18934067240 is 4276043981.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 18934067191 and 18934067200.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 846521 + ... + 868599.

It is an arithmetic number, because the mean of its divisors is an integer number (726570000).

Almost surely, 2^18934067240 is an apocalyptic number.

18934067240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18934067240 is an abundant number, since it is smaller than the sum of its proper divisors (27566412760).

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

18934067240 is a wasteful number, since it uses less digits than its factorization.

18934067240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24050 (or 24046 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 18934067240 in words is "eighteen billion, nine hundred thirty-four million, sixty-seven thousand, two hundred forty".