1915647983168 has 14 divisors (see below), whose sum is σ = 3801363966726. Its totient is φ = 957823991552.

The previous prime is 1915647983141. The next prime is 1915647983173. The reversal of 1915647983168 is 8613897465191.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1040465281024 + 875182702144 = 1020032^2 + 935512^2 .

It is a super-2 number, since 2×1915647983168² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1915647983098 and 1915647983107.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14965999805 + ... + 14965999932.

Almost surely, 2^{1915647983168} is an apocalyptic number.

It is an amenable number.

1915647983168 is a deficient number, since it is larger than the sum of its proper divisors (1885715983558).

1915647983168 is an equidigital number, since it uses as much as digits as its factorization.

1915647983168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29931999749 (or 29931999739 counting only the distinct ones).

The product of its digits is 78382080, while the sum is 68.

The spelling of 1915647983168 in words is "one trillion, nine hundred fifteen billion, six hundred forty-seven million, nine hundred eighty-three thousand, one hundred sixty-eight".