7911864652 has 12 divisors (see below), whose sum is σ = 13850307856. Its totient is φ = 3954633840.

The previous prime is 7911864641. The next prime is 7911864703. The reversal of 7911864652 is 2564681197.

It is a happy number.

It is a super-2 number, since 2×7911864652² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7911864596 and 7911864605.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 310848 + ... + 335335.

Almost surely, 2^7911864652 is an apocalyptic number.

It is an amenable number.

7911864652 is a deficient number, since it is larger than the sum of its proper divisors (5938443204).

7911864652 is a wasteful number, since it uses less digits than its factorization.

7911864652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649248 (or 649246 counting only the distinct ones).

The product of its digits is 725760, while the sum is 49.

The square root of 7911864652 is about 88948.6630141229. The cubic root of 7911864652 is about 1992.6282496988.

The spelling of 7911864652 in words is "seven billion, nine hundred eleven million, eight hundred sixty-four thousand, six hundred fifty-two".