1315948815690 has 64 divisors (see below), whose sum is σ = 3232515686400. Its totient is φ = 342674950464.

The previous prime is 1315948815673. The next prime is 1315948815691. The reversal of 1315948815690 is 965188495131.

It is a happy number.

It is a super-2 number, since 2×1315948815690² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1315948815691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5242471 + ... + 5487749.

It is an arithmetic number, because the mean of its divisors is an integer number (50508057600).

Almost surely, 2^{1315948815690} is an apocalyptic number.

1315948815690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1315948815690 is an abundant number, since it is smaller than the sum of its proper divisors (1916566870710).

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

1315948815690 is a wasteful number, since it uses less digits than its factorization.

1315948815690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249491.

The product of its (nonzero) digits is 9331200, while the sum is 60.

The spelling of 1315948815690 in words is "one trillion, three hundred fifteen billion, nine hundred forty-eight million, eight hundred fifteen thousand, six hundred ninety".