2149674091 has 4 divisors (see below), whose sum is σ = 2150356032. Its totient is φ = 2148992152.

The previous prime is 2149674083. The next prime is 2149674101. The reversal of 2149674091 is 1904769412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2149674091 - 2³ = 2149674083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2149674071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336220 + ... + 342553.

It is an arithmetic number, because the mean of its divisors is an integer number (537589008).

Almost surely, 2^2149674091 is an apocalyptic number.

2149674091 is a deficient number, since it is larger than the sum of its proper divisors (681941).

2149674091 is an equidigital number, since it uses as much as digits as its factorization.

2149674091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681940.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 2149674091 is about 46364.5779771584. The cubic root of 2149674091 is about 1290.5976620841.

The spelling of 2149674091 in words is "two billion, one hundred forty-nine million, six hundred seventy-four thousand, ninety-one".