1315161642 has 16 divisors (see below), whose sum is σ = 2633395680. Its totient is φ = 437875152.

The previous prime is 1315161619. The next prime is 1315161719. The reversal of 1315161642 is 2461615131.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122433 + ... + 132740.

It is an arithmetic number, because the mean of its divisors is an integer number (164587230).

Almost surely, 2^1315161642 is an apocalyptic number.

1315161642 is an abundant number, since it is smaller than the sum of its proper divisors (1318234038).

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

1315161642 is a wasteful number, since it uses less digits than its factorization.

1315161642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256037.

The product of its digits is 4320, while the sum is 30.

The square root of 1315161642 is about 36265.1574103850. The cubic root of 1315161642 is about 1095.6193939453.

Adding to 1315161642 its reverse (2461615131), we get a palindrome (3776776773).

The spelling of 1315161642 in words is "one billion, three hundred fifteen million, one hundred sixty-one thousand, six hundred forty-two".