35189632921 has 9 divisors (see below), whose sum is σ = 35536083933. Its totient is φ = 34846532640.

The previous prime is 35189632913. The next prime is 35189632979. The reversal of 35189632921 is 12923698153.

The square root of 35189632921 is 187589.

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

It can be written as a sum of positive squares in 4 ways, for example, as 6689440521 + 28500192400 = 81789^2 + 168820^2 .

It is not a de Polignac number, because 35189632921 - 2³ = 35189632913 is a prime.

It is a super-2 number, since 2×35189632921² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (35189632901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 20446341 + ... + 20448061.

Almost surely, 2^35189632921 is an apocalyptic number.

35189632921 is the 187589-th square number.

35189632921 is the 93795-th centered octagonal number.

It is an amenable number.

35189632921 is a deficient number, since it is larger than the sum of its proper divisors (346451012).

35189632921 is an frugal number, since it uses more digits than its factorization.

35189632921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3660 (or 1830 counting only the distinct ones).

The product of its digits is 699840, while the sum is 49.

Multiplying 35189632921 by its sum of digits (49), we get a square (1724292013129 = 1313123²).

The spelling of 35189632921 in words is "thirty-five billion, one hundred eighty-nine million, six hundred thirty-two thousand, nine hundred twenty-one".