18970508371 has 16 divisors (see below), whose sum is σ = 20139609600. Its totient is φ = 17818725600.

The previous prime is 18970508363. The next prime is 18970508377. The reversal of 18970508371 is 17380507981.

It is a cyclic number.

It is not a de Polignac number, because 18970508371 - 2³ = 18970508363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18970508377) 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, 3434550 + ... + 3440068.

It is an arithmetic number, because the mean of its divisors is an integer number (1258725600).

Almost surely, 2^18970508371 is an apocalyptic number.

18970508371 is a deficient number, since it is larger than the sum of its proper divisors (1169101229).

18970508371 is a wasteful number, since it uses less digits than its factorization.

18970508371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7050.

The product of its (nonzero) digits is 423360, while the sum is 49.

The spelling of 18970508371 in words is "eighteen billion, nine hundred seventy million, five hundred eight thousand, three hundred seventy-one".