1672061165 has 4 divisors (see below), whose sum is σ = 2006473404. Its totient is φ = 1337648928.

The previous prime is 1672061159. The next prime is 1672061173. The reversal of 1672061165 is 5611602761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5611602761 = 12583 ⋅445967.

It can be written as a sum of positive squares in 2 ways, for example, as 541353289 + 1130707876 = 23267^2 + 33626^2 .

It is a cyclic number.

It is not a de Polignac number, because 1672061165 - 2⁸ = 1672060909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167206112 + ... + 167206121.

It is an arithmetic number, because the mean of its divisors is an integer number (501618351).

Almost surely, 2^1672061165 is an apocalyptic number.

It is an amenable number.

1672061165 is a deficient number, since it is larger than the sum of its proper divisors (334412239).

1672061165 is an equidigital number, since it uses as much as digits as its factorization.

1672061165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334412238.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 1672061165 is about 40890.8445131670. The cubic root of 1672061165 is about 1186.9089008696.

The spelling of 1672061165 in words is "one billion, six hundred seventy-two million, sixty-one thousand, one hundred sixty-five".