2116149291 has 24 divisors (see below), whose sum is σ = 3124490304. Its totient is φ = 1379514240.

The previous prime is 2116149289. The next prime is 2116149349. The reversal of 2116149291 is 1929416112.

It is a happy number.

2116149291 is a `hidden beast` number, since 2 + 1 + 161 + 492 + 9 + 1 = 666.

It is not a de Polignac number, because 2116149291 - 2¹ = 2116149289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2116149271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 902781 + ... + 905121.

It is an arithmetic number, because the mean of its divisors is an integer number (130187096).

Almost surely, 2^2116149291 is an apocalyptic number.

2116149291 is a deficient number, since it is larger than the sum of its proper divisors (1008341013).

2116149291 is a wasteful number, since it uses less digits than its factorization.

2116149291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4531 (or 4528 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 2116149291 is about 46001.6226996396. The cubic root of 2116149291 is about 1283.8533965876.

The spelling of 2116149291 in words is "two billion, one hundred sixteen million, one hundred forty-nine thousand, two hundred ninety-one".