2149845091 has 8 divisors (see below), whose sum is σ = 2178316800. Its totient is φ = 2121405000.

The previous prime is 2149845073. The next prime is 2149845101. The reversal of 2149845091 is 1905489412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2149845091 - 2⁵ = 2149845059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2149845011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149466 + ... + 163216.

It is an arithmetic number, because the mean of its divisors is an integer number (272289600).

Almost surely, 2^2149845091 is an apocalyptic number.

2149845091 is a deficient number, since it is larger than the sum of its proper divisors (28471709).

2149845091 is a wasteful number, since it uses less digits than its factorization.

2149845091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15809.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 2149845091 is about 46366.4220206822. The cubic root of 2149845091 is about 1290.6318822092.

The spelling of 2149845091 in words is "two billion, one hundred forty-nine million, eight hundred forty-five thousand, ninety-one".