4256137949 has 16 divisors (see below), whose sum is σ = 4940468736. Its totient is φ = 3590967600.

The previous prime is 4256137939. The next prime is 4256137987. The reversal of 4256137949 is 9497316524.

It is a cyclic number.

It is not a de Polignac number, because 4256137949 - 2²⁸ = 3987702493 is a prime.

It is a super-2 number, since 2×4256137949² = 36229420481835853202, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4256137897 and 4256137906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4256137939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 846854 + ... + 851864.

It is an arithmetic number, because the mean of its divisors is an integer number (308779296).

Almost surely, 2^4256137949 is an apocalyptic number.

It is an amenable number.

4256137949 is a deficient number, since it is larger than the sum of its proper divisors (684330787).

4256137949 is a wasteful number, since it uses less digits than its factorization.

4256137949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6896.

The product of its digits is 1632960, while the sum is 50.

The square root of 4256137949 is about 65239.0829871175. The cubic root of 4256137949 is about 1620.5853126820.

The spelling of 4256137949 in words is "four billion, two hundred fifty-six million, one hundred thirty-seven thousand, nine hundred forty-nine".