6156221953 has 4 divisors (see below), whose sum is σ = 7035682240. Its totient is φ = 5276761668.

The previous prime is 6156221927. The next prime is 6156221963. The reversal of 6156221953 is 3591226516.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6156221953 - 2¹³ = 6156213761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6156221963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439730133 + ... + 439730146.

It is an arithmetic number, because the mean of its divisors is an integer number (1758920560).

Almost surely, 2^6156221953 is an apocalyptic number.

It is an amenable number.

6156221953 is a deficient number, since it is larger than the sum of its proper divisors (879460287).

6156221953 is an equidigital number, since it uses as much as digits as its factorization.

6156221953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879460286.

The product of its digits is 97200, while the sum is 40.

The square root of 6156221953 is about 78461.5954018270. The cubic root of 6156221953 is about 1832.7564492786.

The spelling of 6156221953 in words is "six billion, one hundred fifty-six million, two hundred twenty-one thousand, nine hundred fifty-three".