2162273957 has 4 divisors (see below), whose sum is σ = 2186569260. Its totient is φ = 2137978656.

The previous prime is 2162273923. The next prime is 2162273977. The reversal of 2162273957 is 7593722612.

It is a happy number.

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 316626436 + 1845647521 = 17794^2 + 42961^2 .

It is a cyclic number.

It is not a de Polignac number, because 2162273957 - 2¹² = 2162269861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2162273977) 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, 12147518 + ... + 12147695.

It is an arithmetic number, because the mean of its divisors is an integer number (546642315).

Almost surely, 2^2162273957 is an apocalyptic number.

It is an amenable number.

2162273957 is a deficient number, since it is larger than the sum of its proper divisors (24295303).

2162273957 is an equidigital number, since it uses as much as digits as its factorization.

2162273957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24295302.

The product of its digits is 317520, while the sum is 44.

The square root of 2162273957 is about 46500.2576014370. The cubic root of 2162273957 is about 1293.1142745435.

The spelling of 2162273957 in words is "two billion, one hundred sixty-two million, two hundred seventy-three thousand, nine hundred fifty-seven".