2156091148 has 12 divisors (see below), whose sum is σ = 3776619280. Its totient is φ = 1077057072.

The previous prime is 2156091109. The next prime is 2156091167. The reversal of 2156091148 is 8411906512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242208 + ... + 250951.

Almost surely, 2^2156091148 is an apocalyptic number.

It is an amenable number.

2156091148 is a deficient number, since it is larger than the sum of its proper divisors (1620528132).

2156091148 is a wasteful number, since it uses less digits than its factorization.

2156091148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494256 (or 494254 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 2156091148 is about 46433.7285601749. The cubic root of 2156091148 is about 1291.8805870396.

The spelling of 2156091148 in words is "two billion, one hundred fifty-six million, ninety-one thousand, one hundred forty-eight".