1317245490 has 320 divisors, whose sum is σ = 4215214080. Its totient is φ = 291600000.

The previous prime is 1317245467. The next prime is 1317245513. The reversal of 1317245490 is 945427131.

1317245490 is a `hidden beast` number, since 131 + 72 + 454 + 9 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1317245467) and next prime (1317245513).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 5247865 + ... + 5248115.

It is an arithmetic number, because the mean of its divisors is an integer number (13172544).

Almost surely, 2^1317245490 is an apocalyptic number.

1317245490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1317245490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2107607040).

1317245490 is an abundant number, since it is smaller than the sum of its proper divisors (2897968590).

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

1317245490 is a wasteful number, since it uses less digits than its factorization.

1317245490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331 (or 322 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 1317245490 is about 36293.8767562794. The cubic root of 1317245490 is about 1096.1977511159.

The spelling of 1317245490 in words is "one billion, three hundred seventeen million, two hundred forty-five thousand, four hundred ninety".