18378741426 has 32 divisors (see below), whose sum is σ = 37676753856. Its totient is φ = 5973216000.

The previous prime is 18378741421. The next prime is 18378741461. The reversal of 18378741426 is 62414787381.

It is not an unprimeable number, because it can be changed into a prime (18378741421) 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, 401661 + ... + 445071.

It is an arithmetic number, because the mean of its divisors is an integer number (1177398558).

Almost surely, 2^18378741426 is an apocalyptic number.

18378741426 is an abundant number, since it is smaller than the sum of its proper divisors (19298012430).

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

18378741426 is a wasteful number, since it uses less digits than its factorization.

18378741426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45178.

The product of its digits is 1806336, while the sum is 51.

The spelling of 18378741426 in words is "eighteen billion, three hundred seventy-eight million, seven hundred forty-one thousand, four hundred twenty-six".