3946531397236 has 6 divisors (see below), whose sum is σ = 6906429945170. Its totient is φ = 1973265698616.

The previous prime is 3946531397213. The next prime is 3946531397239. The reversal of 3946531397236 is 6327931356493.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3853738052836 + 92793344400 = 1963094^2 + 304620^2 .

It is a super-2 number, since 2×3946531397236² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3946531397239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493316424651 + ... + 493316424658.

Almost surely, 2^{3946531397236} is an apocalyptic number.

It is an amenable number.

3946531397236 is a deficient number, since it is larger than the sum of its proper divisors (2959898547934).

3946531397236 is a wasteful number, since it uses less digits than its factorization.

3946531397236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986632849313 (or 986632849311 counting only the distinct ones).

The product of its digits is 66134880, while the sum is 61.

The spelling of 3946531397236 in words is "three trillion, nine hundred forty-six billion, five hundred thirty-one million, three hundred ninety-seven thousand, two hundred thirty-six".