18970031586 has 64 divisors (see below), whose sum is σ = 43252724736. Its totient is φ = 5490408000.

The previous prime is 18970031579. The next prime is 18970031599. The reversal of 18970031586 is 68513007981.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1055205 + ... + 1073031.

It is an arithmetic number, because the mean of its divisors is an integer number (675823824).

Almost surely, 2^18970031586 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18970031586, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21626362368).

18970031586 is an abundant number, since it is smaller than the sum of its proper divisors (24282693150).

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

18970031586 is a wasteful number, since it uses less digits than its factorization.

18970031586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18567.

The product of its (nonzero) digits is 362880, while the sum is 48.

The spelling of 18970031586 in words is "eighteen billion, nine hundred seventy million, thirty-one thousand, five hundred eighty-six".