1671172377 has 16 divisors (see below), whose sum is σ = 2615375232. Its totient is φ = 929145600.

The previous prime is 1671172343. The next prime is 1671172439. The reversal of 1671172377 is 7732711761.

It is not a de Polignac number, because 1671172377 - 2²² = 1666978073 is a prime.

It is a super-2 number, since 2×1671172377² = 5585634227295660258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1671172337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1074624 + ... + 1076177.

It is an arithmetic number, because the mean of its divisors is an integer number (163460952).

Almost surely, 2^1671172377 is an apocalyptic number.

It is an amenable number.

1671172377 is a deficient number, since it is larger than the sum of its proper divisors (944202855).

1671172377 is a wasteful number, since it uses less digits than its factorization.

1671172377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2150848.

The product of its digits is 86436, while the sum is 42.

The square root of 1671172377 is about 40879.9752568418. The cubic root of 1671172377 is about 1186.6985622012.

The spelling of 1671172377 in words is "one billion, six hundred seventy-one million, one hundred seventy-two thousand, three hundred seventy-seven".