4051249191 has 24 divisors (see below), whose sum is σ = 6389969040. Its totient is φ = 2452924800.

The previous prime is 4051249157. The next prime is 4051249193. The reversal of 4051249191 is 1919421504.

It is a happy number.

4051249191 is a `hidden beast` number, since 405 + 1 + 249 + 1 + 9 + 1 = 666.

4051249191 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4051249191 - 2⁷ = 4051249063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4051249193) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85755 + ... + 124323.

It is an arithmetic number, because the mean of its divisors is an integer number (266248710).

Almost surely, 2^4051249191 is an apocalyptic number.

4051249191 is a deficient number, since it is larger than the sum of its proper divisors (2338719849).

4051249191 is a wasteful number, since it uses less digits than its factorization.

4051249191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39647 (or 39644 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 4051249191 is about 63649.4241215111. The cubic root of 4051249191 is about 1594.1517213125.

The spelling of 4051249191 in words is "four billion, fifty-one million, two hundred forty-nine thousand, one hundred ninety-one".