4023457381 has 2 divisors, whose sum is σ = 4023457382. Its totient is φ = 4023457380.

The previous prime is 4023457349. The next prime is 4023457391. The reversal of 4023457381 is 1837543204.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2749324356 + 1274133025 = 52434^2 + 35695^2 .

It is a cyclic number.

It is not a de Polignac number, because 4023457381 - 2⁵ = 4023457349 is a prime.

It is a super-2 number, since 2×4023457381² = 32376418593446758322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4023457381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4023457331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2011728690 + 2011728691.

It is an arithmetic number, because the mean of its divisors is an integer number (2011728691).

Almost surely, 2^4023457381 is an apocalyptic number.

It is an amenable number.

4023457381 is a deficient number, since it is larger than the sum of its proper divisors (1).

4023457381 is an equidigital number, since it uses as much as digits as its factorization.

4023457381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 4023457381 is about 63430.7289962838. The cubic root of 4023457381 is about 1590.4980285276.

The spelling of 4023457381 in words is "four billion, twenty-three million, four hundred fifty-seven thousand, three hundred eighty-one".