2162779953 has 16 divisors (see below), whose sum is σ = 3015628800. Its totient is φ = 1376164944.

The previous prime is 2162779939. The next prime is 2162779991. The reversal of 2162779953 is 3599772612.

It is not a de Polignac number, because 2162779953 - 2⁵ = 2162779921 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2162779896 and 2162779905.

It is not an unprimeable number, because it can be changed into a prime (2162779153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1903 + ... + 65796.

It is an arithmetic number, because the mean of its divisors is an integer number (188476800).

Almost surely, 2^2162779953 is an apocalyptic number.

2162779953 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2162779953 is a deficient number, since it is larger than the sum of its proper divisors (852848847).

2162779953 is a wasteful number, since it uses less digits than its factorization.

2162779953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68188.

The product of its digits is 1428840, while the sum is 51.

The square root of 2162779953 is about 46505.6980702365. The cubic root of 2162779953 is about 1293.2151343531.

The spelling of 2162779953 in words is "two billion, one hundred sixty-two million, seven hundred seventy-nine thousand, nine hundred fifty-three".