1670832387 has 32 divisors (see below), whose sum is σ = 2876889600. Its totient is φ = 938572704.

The previous prime is 1670832377. The next prime is 1670832439. The reversal of 1670832387 is 7832380761.

It is not a de Polignac number, because 1670832387 - 2⁶ = 1670832323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1670832377) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63768 + ... + 86069.

It is an arithmetic number, because the mean of its divisors is an integer number (89902800).

Almost surely, 2^1670832387 is an apocalyptic number.

1670832387 is a deficient number, since it is larger than the sum of its proper divisors (1206057213).

1670832387 is a wasteful number, since it uses less digits than its factorization.

1670832387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149912 (or 149906 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 1670832387 is about 40875.8166523924. The cubic root of 1670832387 is about 1186.6180811741.

The spelling of 1670832387 in words is "one billion, six hundred seventy million, eight hundred thirty-two thousand, three hundred eighty-seven".