1670172995 has 16 divisors (see below), whose sum is σ = 2018967552. Its totient is φ = 1326334560.

The previous prime is 1670172989. The next prime is 1670172997. The reversal of 1670172995 is 5992710761.

It is not a de Polignac number, because 1670172995 - 2²⁶ = 1603064131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1670172997) 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, 425090 + ... + 429000.

It is an arithmetic number, because the mean of its divisors is an integer number (126185472).

Almost surely, 2^1670172995 is an apocalyptic number.

1670172995 is a deficient number, since it is larger than the sum of its proper divisors (348794557).

1670172995 is a wasteful number, since it uses less digits than its factorization.

1670172995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4522.

The product of its (nonzero) digits is 238140, while the sum is 47.

The square root of 1670172995 is about 40867.7500604083. The cubic root of 1670172995 is about 1186.4619615000.

The spelling of 1670172995 in words is "one billion, six hundred seventy million, one hundred seventy-two thousand, nine hundred ninety-five".