1670918897 has 8 divisors (see below), whose sum is σ = 1768736640. Its totient is φ = 1575781200.

The previous prime is 1670918867. The next prime is 1670918971. The reversal of 1670918897 is 7988190761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1670918897 - 2⁶ = 1670918833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1670918867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 668729 + ... + 671222.

It is an arithmetic number, because the mean of its divisors is an integer number (221092080).

Almost surely, 2^1670918897 is an apocalyptic number.

It is an amenable number.

1670918897 is a deficient number, since it is larger than the sum of its proper divisors (97817743).

1670918897 is a wasteful number, since it uses less digits than its factorization.

1670918897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340023.

The product of its (nonzero) digits is 1524096, while the sum is 56.

The square root of 1670918897 is about 40876.8748438527. The cubic root of 1670918897 is about 1186.6385604991.

The spelling of 1670918897 in words is "one billion, six hundred seventy million, nine hundred eighteen thousand, eight hundred ninety-seven".