2160278249 has 4 divisors (see below), whose sum is σ = 2206241664. Its totient is φ = 2114314836.

The previous prime is 2160278227. The next prime is 2160278257. The reversal of 2160278249 is 9428720612.

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 2160278249 - 2⁸ = 2160277993 is a prime.

It is a super-2 number, since 2×2160278249² = 9333604226205012002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2160278209) 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, 22981637 + ... + 22981730.

It is an arithmetic number, because the mean of its divisors is an integer number (551560416).

Almost surely, 2^2160278249 is an apocalyptic number.

It is an amenable number.

2160278249 is a deficient number, since it is larger than the sum of its proper divisors (45963415).

2160278249 is an equidigital number, since it uses as much as digits as its factorization.

2160278249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45963414.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 2160278249 is about 46478.7935407106. The cubic root of 2160278249 is about 1292.7163180524.

The spelling of 2160278249 in words is "two billion, one hundred sixty million, two hundred seventy-eight thousand, two hundred forty-nine".