7981807470 has 432 divisors, whose sum is σ = 25752887280. Its totient is φ = 1577511936.

The previous prime is 7981807459. The next prime is 7981807487. The reversal of 7981807470 is 747081897.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 89683186 + ... + 89683274.

It is an arithmetic number, because the mean of its divisors is an integer number (59613165).

Almost surely, 2^7981807470 is an apocalyptic number.

7981807470 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7981807470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12876443640).

7981807470 is an abundant number, since it is smaller than the sum of its proper divisors (17771079810).

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

7981807470 is a wasteful number, since it uses less digits than its factorization.

7981807470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 790272, while the sum is 51.

The square root of 7981807470 is about 89340.9618819945. The cubic root of 7981807470 is about 1998.4828051843.

The spelling of 7981807470 in words is "seven billion, nine hundred eighty-one million, eight hundred seven thousand, four hundred seventy".