1697129872 has 10 divisors (see below), whose sum is σ = 3288189158. Its totient is φ = 848564928.

The previous prime is 1697129869. The next prime is 1697129881. The reversal of 1697129872 is 2789217961.

It can be written as a sum of positive squares in only one way, i.e., 1696121856 + 1008016 = 41184^2 + 1004^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53035293 + ... + 53035324.

Almost surely, 2^1697129872 is an apocalyptic number.

It is an amenable number.

1697129872 is a deficient number, since it is larger than the sum of its proper divisors (1591059286).

1697129872 is a wasteful number, since it uses less digits than its factorization.

1697129872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106070625 (or 106070619 counting only the distinct ones).

The product of its digits is 762048, while the sum is 52.

The square root of 1697129872 is about 41196.2361387542. The cubic root of 1697129872 is about 1192.8111568141.

The spelling of 1697129872 in words is "one billion, six hundred ninety-seven million, one hundred twenty-nine thousand, eight hundred seventy-two".