3156450899849 has 4 divisors (see below), whose sum is σ = 3399254815236. Its totient is φ = 2913646984464.

The previous prime is 3156450899837. The next prime is 3156450899857. The reversal of 3156450899849 is 9489980546513.

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

It can be written as a sum of positive squares in 2 ways, for example, as 821437694224 + 2335013205625 = 906332^2 + 1528075^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3156450899849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3156450899449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121401957674 + ... + 121401957699.

It is an arithmetic number, because the mean of its divisors is an integer number (849813703809).

Almost surely, 2^{3156450899849} is an apocalyptic number.

It is an amenable number.

3156450899849 is a deficient number, since it is larger than the sum of its proper divisors (242803915387).

3156450899849 is a wasteful number, since it uses less digits than its factorization.

3156450899849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242803915386.

The product of its (nonzero) digits is 335923200, while the sum is 71.

The spelling of 3156450899849 in words is "three trillion, one hundred fifty-six billion, four hundred fifty million, eight hundred ninety-nine thousand, eight hundred forty-nine".