1312791480 has 384 divisors, whose sum is σ = 5730117120. Its totient is φ = 251735040.

The previous prime is 1312791449. The next prime is 1312791511. The reversal of 1312791480 is 841972131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1312791449) and next prime (1312791511).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 358539 + ... + 362181.

It is an arithmetic number, because the mean of its divisors is an integer number (14922180).

Almost surely, 2^1312791480 is an apocalyptic number.

1312791480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1312791480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2865058560).

1312791480 is an abundant number, since it is smaller than the sum of its proper divisors (4417325640).

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

1312791480 is a wasteful number, since it uses less digits than its factorization.

1312791480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3691 (or 3684 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1312791480 is about 36232.4644483369. The cubic root of 1312791480 is about 1094.9608292737.

The spelling of 1312791480 in words is "one billion, three hundred twelve million, seven hundred ninety-one thousand, four hundred eighty".