1670692889 has 8 divisors (see below), whose sum is σ = 1764694272. Its totient is φ = 1579198320.

The previous prime is 1670692843. The next prime is 1670692913. The reversal of 1670692889 is 9882960761.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1670692889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1670692189) 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, 625334 + ... + 627999.

It is an arithmetic number, because the mean of its divisors is an integer number (220586784).

Almost surely, 2^1670692889 is an apocalyptic number.

It is an amenable number.

1670692889 is a deficient number, since it is larger than the sum of its proper divisors (94001383).

1670692889 is a wasteful number, since it uses less digits than its factorization.

1670692889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253407.

The product of its (nonzero) digits is 2612736, while the sum is 56.

The square root of 1670692889 is about 40874.1102533132. The cubic root of 1670692889 is about 1186.5850566255.

The spelling of 1670692889 in words is "one billion, six hundred seventy million, six hundred ninety-two thousand, eight hundred eighty-nine".