18926811340 has 24 divisors (see below), whose sum is σ = 39952251360. Its totient is φ = 7531496448.

The previous prime is 18926811301. The next prime is 18926811349. The reversal of 18926811340 is 4311862981.

It is not an unprimeable number, because it can be changed into a prime (18926811349) 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, 2447800 + ... + 2455519.

It is an arithmetic number, because the mean of its divisors is an integer number (1664677140).

Almost surely, 2^18926811340 is an apocalyptic number.

18926811340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18926811340 is an abundant number, since it is smaller than the sum of its proper divisors (21025440020).

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

18926811340 is a wasteful number, since it uses less digits than its factorization.

18926811340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4903521 (or 4903519 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 43.

The spelling of 18926811340 in words is "eighteen billion, nine hundred twenty-six million, eight hundred eleven thousand, three hundred forty".