7944315870 has 24 divisors (see below), whose sum is σ = 19067529816. Its totient is φ = 2118354048.

The previous prime is 7944315823. The next prime is 7944315877. The reversal of 7944315870 is 785134497.

It is a happy number.

It is a super-2 number, since 2×7944315870² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7944315877) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 480054 + ... + 496326.

It is an arithmetic number, because the mean of its divisors is an integer number (794480409).

Almost surely, 2^7944315870 is an apocalyptic number.

7944315870 is an abundant number, since it is smaller than the sum of its proper divisors (11123213946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7944315870 is an frugal number, since it uses more digits than its factorization.

7944315870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32556 (or 16283 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 48.

The square root of 7944315870 is about 89130.8917828157. The cubic root of 7944315870 is about 1995.3488476090.

The spelling of 7944315870 in words is "seven billion, nine hundred forty-four million, three hundred fifteen thousand, eight hundred seventy".