2257738443 has 48 divisors (see below), whose sum is σ = 3477427200. Its totient is φ = 1408545600.

The previous prime is 2257738423. The next prime is 2257738447. The reversal of 2257738443 is 3448377522.

2257738443 is a `hidden beast` number, since 2 + 2 + 577 + 38 + 4 + 43 = 666.

It is not a de Polignac number, because 2257738443 - 2⁵ = 2257738411 is a prime.

Its product of digits (1128960) is a multiple of the sum of its prime factors (1280).

It is not an unprimeable number, because it can be changed into a prime (2257738447) 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, 2189338 + ... + 2190368.

It is an arithmetic number, because the mean of its divisors is an integer number (72446400).

Almost surely, 2^2257738443 is an apocalyptic number.

2257738443 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2257738443 is a deficient number, since it is larger than the sum of its proper divisors (1219688757).

2257738443 is a wasteful number, since it uses less digits than its factorization.

2257738443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280 (or 1277 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 45.

The square root of 2257738443 is about 47515.6652378981. The cubic root of 2257738443 is about 1311.8712342876.

The spelling of 2257738443 in words is "two billion, two hundred fifty-seven million, seven hundred thirty-eight thousand, four hundred forty-three".