315611374849 has 9 divisors (see below), whose sum is σ = 316719165217. Its totient is φ = 314507451604.

The previous prime is 315611374817. The next prime is 315611374873. The reversal of 315611374849 is 948473116513.

The square root of 315611374849 is 561793.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 315611374849 - 2⁵ = 315611374817 is a prime.

It is a super-2 number, since 2×315611374849² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 315611374796 and 315611374805.

It is not an unprimeable number, because it can be changed into a prime (315611374049) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 194941362 + ... + 194942980.

Almost surely, 2^315611374849 is an apocalyptic number.

315611374849 is the 561793-rd square number.

315611374849 is the 280897-th centered octagonal number.

It is an amenable number.

315611374849 is a deficient number, since it is larger than the sum of its proper divisors (1107790368).

315611374849 is an frugal number, since it uses more digits than its factorization.

315611374849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3932 (or 1966 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 52.

The spelling of 315611374849 in words is "three hundred fifteen billion, six hundred eleven million, three hundred seventy-four thousand, eight hundred forty-nine".