1670685388 has 6 divisors (see below), whose sum is σ = 2923699436. Its totient is φ = 835342692.

The previous prime is 1670685377. The next prime is 1670685403. The reversal of 1670685388 is 8835860761.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208835670 + ... + 208835677.

Almost surely, 2^1670685388 is an apocalyptic number.

It is an amenable number.

1670685388 is a deficient number, since it is larger than the sum of its proper divisors (1253014048).

1670685388 is a wasteful number, since it uses less digits than its factorization.

1670685388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417671351 (or 417671349 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 52.

The square root of 1670685388 is about 40874.0184958612. The cubic root of 1670685388 is about 1186.5832807978.

The spelling of 1670685388 in words is "one billion, six hundred seventy million, six hundred eighty-five thousand, three hundred eighty-eight".