1317797910 has 320 divisors, whose sum is σ = 4308885504. Its totient is φ = 284601600.

The previous prime is 1317797893. The next prime is 1317797951. The reversal of 1317797910 is 197977131.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 3590547 + ... + 3590913.

Almost surely, 2^1317797910 is an apocalyptic number.

1317797910 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 1317797910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2154442752).

1317797910 is an abundant number, since it is smaller than the sum of its proper divisors (2991087594).

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

1317797910 is a wasteful number, since it uses less digits than its factorization.

1317797910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 432 counting only the distinct ones).

The product of its (nonzero) digits is 83349, while the sum is 45.

The square root of 1317797910 is about 36301.4863332068. The cubic root of 1317797910 is about 1096.3509690578.

The spelling of 1317797910 in words is "one billion, three hundred seventeen million, seven hundred ninety-seven thousand, nine hundred ten".