2249813891 has 8 divisors (see below), whose sum is σ = 2436265104. Its totient is φ = 2065275360.

The previous prime is 2249813887. The next prime is 2249813899. The reversal of 2249813891 is 1983189422.

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 2249813891 - 2² = 2249813887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2249813899) 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, 475721 + ... + 480426.

It is an arithmetic number, because the mean of its divisors is an integer number (304533138).

Almost surely, 2^2249813891 is an apocalyptic number.

2249813891 is a deficient number, since it is larger than the sum of its proper divisors (186451213).

2249813891 is a wasteful number, since it uses less digits than its factorization.

2249813891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956341.

The product of its digits is 248832, while the sum is 47.

The square root of 2249813891 is about 47432.2031008470. The cubic root of 2249813891 is about 1310.3345669557.

The spelling of 2249813891 in words is "two billion, two hundred forty-nine million, eight hundred thirteen thousand, eight hundred ninety-one".