2450249991 has 48 divisors (see below), whose sum is σ = 4193467200. Its totient is φ = 1348913664.

The previous prime is 2450249987. The next prime is 2450249993. The reversal of 2450249991 is 1999420542.

2450249991 is a `hidden beast` number, since 2 + 450 + 24 + 99 + 91 = 666.

It is not a de Polignac number, because 2450249991 - 2² = 2450249987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2450249993) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1038385 + ... + 1040741.

It is an arithmetic number, because the mean of its divisors is an integer number (87363900).

Almost surely, 2^2450249991 is an apocalyptic number.

2450249991 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2450249991 is a deficient number, since it is larger than the sum of its proper divisors (1743217209).

2450249991 is a wasteful number, since it uses less digits than its factorization.

2450249991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2968 (or 2965 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 2450249991 is about 49499.9999090909. Note that the first 4 decimals coincide. The cubic root of 2450249991 is about 1348.1456004107.

The spelling of 2450249991 in words is "two billion, four hundred fifty million, two hundred forty-nine thousand, nine hundred ninety-one".