1670973165 has 32 divisors (see below), whose sum is σ = 2990592000. Its totient is φ = 885193920.

The previous prime is 1670973151. The next prime is 1670973179. The reversal of 1670973165 is 5613790761.

It is an interprime number because it is at equal distance from previous prime (1670973151) and next prime (1670973179).

It is not a de Polignac number, because 1670973165 - 2⁷ = 1670973037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1670973165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21421 + ... + 61650.

It is an arithmetic number, because the mean of its divisors is an integer number (93456000).

Almost surely, 2^1670973165 is an apocalyptic number.

1670973165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1670973165 is a deficient number, since it is larger than the sum of its proper divisors (1319618835).

1670973165 is a wasteful number, since it uses less digits than its factorization.

1670973165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83234 (or 83228 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 1670973165 is about 40877.5386367624. The cubic root of 1670973165 is about 1186.6514068845.

The spelling of 1670973165 in words is "one billion, six hundred seventy million, nine hundred seventy-three thousand, one hundred sixty-five".