3699432938881 has 9 divisors (see below), whose sum is σ = 3761192870019. Its totient is φ = 3638671093800.

The previous prime is 3699432938869. The next prime is 3699432938911. The reversal of 3699432938881 is 1888392349963.

The square root of 3699432938881 is 1923391.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 120298679281 + 3579134259600 = 346841^2 + 1891860^2 .

It is not a de Polignac number, because 3699432938881 - 2⁷ = 3699432938753 is a prime.

It is a super-2 number, since 2×3699432938881² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3699432938581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 117311086 + ... + 117342616.

It is an arithmetic number, because the mean of its divisors is an integer number (417910318891).

Almost surely, 2^{3699432938881} is an apocalyptic number.

3699432938881 is the 1923391-st square number.

3699432938881 is the 961696-th centered octagonal number.

It is an amenable number.

3699432938881 is a deficient number, since it is larger than the sum of its proper divisors (61759931138).

3699432938881 is an frugal number, since it uses more digits than its factorization.

3699432938881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63184 (or 31592 counting only the distinct ones).

The product of its digits is 483729408, while the sum is 73.

The spelling of 3699432938881 in words is "three trillion, six hundred ninety-nine billion, four hundred thirty-two million, nine hundred thirty-eight thousand, eight hundred eighty-one".