1349971715 has 4 divisors (see below), whose sum is σ = 1619966064. Its totient is φ = 1079977368.

The previous prime is 1349971709. The next prime is 1349971723. The reversal of 1349971715 is 5171799431.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1349971715 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1349971715.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134997167 + ... + 134997176.

It is an arithmetic number, because the mean of its divisors is an integer number (404991516).

Almost surely, 2^1349971715 is an apocalyptic number.

1349971715 is a deficient number, since it is larger than the sum of its proper divisors (269994349).

1349971715 is an equidigital number, since it uses as much as digits as its factorization.

1349971715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269994348.

The product of its digits is 238140, while the sum is 47.

The square root of 1349971715 is about 36741.9612296350. The cubic root of 1349971715 is about 1105.2017308100.

The spelling of 1349971715 in words is "one billion, three hundred forty-nine million, nine hundred seventy-one thousand, seven hundred fifteen".