1319318787690 has 48 divisors (see below), whose sum is σ = 3432396135168. Its totient is φ = 351596057568.

The previous prime is 1319318787659. The next prime is 1319318787733. The reversal of 1319318787690 is 967878139131.

1319318787690 is a `hidden beast` number, since 1 + 319 + 3 + 187 + 87 + 69 + 0 = 666.

It is a super-2 number, since 2×1319318787690² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4487694 + ... + 4772633.

It is an arithmetic number, because the mean of its divisors is an integer number (71508252816).

Almost surely, 2^{1319318787690} is an apocalyptic number.

1319318787690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1319318787690 is an abundant number, since it is smaller than the sum of its proper divisors (2113077347478).

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

1319318787690 is a wasteful number, since it uses less digits than its factorization.

1319318787690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9261923 (or 9261920 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 63.

The spelling of 1319318787690 in words is "one trillion, three hundred nineteen billion, three hundred eighteen million, seven hundred eighty-seven thousand, six hundred ninety".