1315468779 has 8 divisors (see below), whose sum is σ = 1783686720. Its totient is φ = 862115016.

The previous prime is 1315468769. The next prime is 1315468783. The reversal of 1315468779 is 9778645131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1315468779 - 2⁸ = 1315468523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1315468729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3715837 + ... + 3716190.

It is an arithmetic number, because the mean of its divisors is an integer number (222960840).

Almost surely, 2^1315468779 is an apocalyptic number.

1315468779 is a deficient number, since it is larger than the sum of its proper divisors (468217941).

1315468779 is an equidigital number, since it uses as much as digits as its factorization.

1315468779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7432089.

The product of its digits is 1270080, while the sum is 51.

The square root of 1315468779 is about 36269.3917649580. The cubic root of 1315468779 is about 1095.7046760002.

The spelling of 1315468779 in words is "one billion, three hundred fifteen million, four hundred sixty-eight thousand, seven hundred seventy-nine".