18870051406 has 8 divisors (see below), whose sum is σ = 28409524704. Its totient is φ = 9400209840.

The previous prime is 18870051379. The next prime is 18870051407. The reversal of 18870051406 is 60415007881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18870051407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17407255 + ... + 17408338.

It is an arithmetic number, because the mean of its divisors is an integer number (3551190588).

Almost surely, 2^18870051406 is an apocalyptic number.

18870051406 is a deficient number, since it is larger than the sum of its proper divisors (9539473298).

18870051406 is a wasteful number, since it uses less digits than its factorization.

18870051406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34815866.

The product of its (nonzero) digits is 53760, while the sum is 40.

The spelling of 18870051406 in words is "eighteen billion, eight hundred seventy million, fifty-one thousand, four hundred six".