1671601604 has 12 divisors (see below), whose sum is σ = 2926618128. Its totient is φ = 835425000.

The previous prime is 1671601549. The next prime is 1671601621. The reversal of 1671601604 is 4061061761.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83822 + ... + 101829.

It is an arithmetic number, because the mean of its divisors is an integer number (243884844).

Almost surely, 2^1671601604 is an apocalyptic number.

It is an amenable number.

1671601604 is a deficient number, since it is larger than the sum of its proper divisors (1255016524).

1671601604 is a wasteful number, since it uses less digits than its factorization.

1671601604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187906 (or 187904 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 1671601604 is about 40885.2247639658. The cubic root of 1671601604 is about 1186.8001514544.

The spelling of 1671601604 in words is "one billion, six hundred seventy-one million, six hundred one thousand, six hundred four".