1670797172 has 48 divisors (see below), whose sum is σ = 3273080832. Its totient is φ = 739757280.

The previous prime is 1670797169. The next prime is 1670797217. The reversal of 1670797172 is 2717970761.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 459353 + ... + 462975.

It is an arithmetic number, because the mean of its divisors is an integer number (68189184).

Almost surely, 2^1670797172 is an apocalyptic number.

It is an amenable number.

1670797172 is a deficient number, since it is larger than the sum of its proper divisors (1602283660).

1670797172 is a wasteful number, since it uses less digits than its factorization.

1670797172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3908 (or 3906 counting only the distinct ones).

The product of its (nonzero) digits is 259308, while the sum is 47.

The square root of 1670797172 is about 40875.3858942029. The cubic root of 1670797172 is about 1186.6097446009.

The spelling of 1670797172 in words is "one billion, six hundred seventy million, seven hundred ninety-seven thousand, one hundred seventy-two".