2291937945 has 32 divisors (see below), whose sum is σ = 4005949824. Its totient is φ = 1109721600.

The previous prime is 2291937941. The next prime is 2291937979. The reversal of 2291937945 is 5497391922.

It is not a de Polignac number, because 2291937945 - 2² = 2291937941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2291937941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116439 + ... + 134691.

It is an arithmetic number, because the mean of its divisors is an integer number (125185932).

Almost surely, 2^2291937945 is an apocalyptic number.

It is an amenable number.

2291937945 is a deficient number, since it is larger than the sum of its proper divisors (1714011879).

2291937945 is a wasteful number, since it uses less digits than its factorization.

2291937945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19033.

The product of its digits is 1224720, while the sum is 51.

The square root of 2291937945 is about 47874.1887137526. The cubic root of 2291937945 is about 1318.4620028916.

The spelling of 2291937945 in words is "two billion, two hundred ninety-one million, nine hundred thirty-seven thousand, nine hundred forty-five".