2091117249 has 32 divisors (see below), whose sum is σ = 3532515840. Its totient is φ = 1211141376.

The previous prime is 2091117241. The next prime is 2091117263. The reversal of 2091117249 is 9427111902.

It is not a de Polignac number, because 2091117249 - 2³ = 2091117241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2091117241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169257 + ... + 181190.

It is an arithmetic number, because the mean of its divisors is an integer number (110391120).

Almost surely, 2^2091117249 is an apocalyptic number.

It is an amenable number.

2091117249 is a deficient number, since it is larger than the sum of its proper divisors (1441398591).

2091117249 is a wasteful number, since it uses less digits than its factorization.

2091117249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350486 (or 350480 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 2091117249 is about 45728.7354843757. The cubic root of 2091117249 is about 1278.7710472022.

The spelling of 2091117249 in words is "two billion, ninety-one million, one hundred seventeen thousand, two hundred forty-nine".