1671171880 has 32 divisors (see below), whose sum is σ = 4297299840. Its totient is φ = 572973120.

The previous prime is 1671171857. The next prime is 1671171907. The reversal of 1671171880 is 881711761.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2983956 + ... + 2984515.

It is an arithmetic number, because the mean of its divisors is an integer number (134290620).

Almost surely, 2^1671171880 is an apocalyptic number.

1671171880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1671171880 is an abundant number, since it is smaller than the sum of its proper divisors (2626127960).

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

1671171880 is a wasteful number, since it uses less digits than its factorization.

1671171880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5968489 (or 5968485 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 40.

The square root of 1671171880 is about 40879.9691780706. The cubic root of 1671171880 is about 1186.6984445613.

The spelling of 1671171880 in words is "one billion, six hundred seventy-one million, one hundred seventy-one thousand, eight hundred eighty".