1979418171 has 16 divisors (see below), whose sum is σ = 2890836000. Its totient is φ = 1199159808.

The previous prime is 1979418143. The next prime is 1979418179. The reversal of 1979418171 is 1718149791.

It is not a de Polignac number, because 1979418171 - 2⁵ = 1979418139 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1979418171.

It is not an unprimeable number, because it can be changed into a prime (1979418179) 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, 667696 + ... + 670653.

It is an arithmetic number, because the mean of its divisors is an integer number (180677250).

Almost surely, 2^1979418171 is an apocalyptic number.

1979418171 is a deficient number, since it is larger than the sum of its proper divisors (911417829).

1979418171 is a wasteful number, since it uses less digits than its factorization.

1979418171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338398.

The product of its digits is 127008, while the sum is 48.

The square root of 1979418171 is about 44490.6526250178. The cubic root of 1979418171 is about 1255.5842258020.

The spelling of 1979418171 in words is "one billion, nine hundred seventy-nine million, four hundred eighteen thousand, one hundred seventy-one".