18734929620 has 96 divisors (see below), whose sum is σ = 58196759040. Its totient is φ = 4464812160.

The previous prime is 18734929601. The next prime is 18734929621. The reversal of 18734929620 is 2692943781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18734929621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 201622 + ... + 279501.

It is an arithmetic number, because the mean of its divisors is an integer number (606216240).

Almost surely, 2^18734929620 is an apocalyptic number.

18734929620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18734929620 is an abundant number, since it is smaller than the sum of its proper divisors (39461829420).

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

18734929620 is a wasteful number, since it uses less digits than its factorization.

18734929620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481205 (or 481203 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 51.

The spelling of 18734929620 in words is "eighteen billion, seven hundred thirty-four million, nine hundred twenty-nine thousand, six hundred twenty".