7918997460 has 384 divisors, whose sum is σ = 27271157760. Its totient is φ = 1706158080.

The previous prime is 7918997447. The next prime is 7918997467. The reversal of 7918997460 is 647998197.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 7918997394 and 7918997403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7918997467) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 25794627 + ... + 25794933.

It is an arithmetic number, because the mean of its divisors is an integer number (71018640).

Almost surely, 2^7918997460 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7918997460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13635578880).

7918997460 is an abundant number, since it is smaller than the sum of its proper divisors (19352160300).

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

7918997460 is a wasteful number, since it uses less digits than its factorization.

7918997460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 60.

The square root of 7918997460 is about 88988.7490641373. The cubic root of 7918997460 is about 1993.2268766264.

The spelling of 7918997460 in words is "seven billion, nine hundred eighteen million, nine hundred ninety-seven thousand, four hundred sixty".