18837412478 has 12 divisors (see below), whose sum is σ = 29821555800. Its totient is φ = 8922984516.

The previous prime is 18837412469. The next prime is 18837412487. The reversal of 18837412478 is 87421473881.

It is an interprime number because it is at equal distance from previous prime (18837412469) and next prime (18837412487).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13044578 + ... + 13046021.

It is an arithmetic number, because the mean of its divisors is an integer number (2485129650).

Almost surely, 2^18837412478 is an apocalyptic number.

18837412478 is a deficient number, since it is larger than the sum of its proper divisors (10984143322).

18837412478 is a wasteful number, since it uses less digits than its factorization.

18837412478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26090639 (or 26090620 counting only the distinct ones).

The product of its digits is 2408448, while the sum is 53.

The spelling of 18837412478 in words is "eighteen billion, eight hundred thirty-seven million, four hundred twelve thousand, four hundred seventy-eight".