1531622232164 has 12 divisors (see below), whose sum is σ = 2717055878124. Its totient is φ = 755320552704.

The previous prime is 1531622232137. The next prime is 1531622232271. The reversal of 1531622232164 is 4612322261351.

It can be written as a sum of positive squares in 2 ways, for example, as 739892428900 + 791729803264 = 860170^2 + 889792^2 .

It is a super-2 number, since 2×1531622232164² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2622640517 + ... + 2622641100.

It is an arithmetic number, because the mean of its divisors is an integer number (226421323177).

Almost surely, 2^{1531622232164} is an apocalyptic number.

It is an amenable number.

1531622232164 is a deficient number, since it is larger than the sum of its proper divisors (1185433645960).

1531622232164 is a wasteful number, since it uses less digits than its factorization.

1531622232164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5245281694 (or 5245281692 counting only the distinct ones).

The product of its digits is 103680, while the sum is 38.

The spelling of 1531622232164 in words is "one trillion, five hundred thirty-one billion, six hundred twenty-two million, two hundred thirty-two thousand, one hundred sixty-four".