4457658749 has 2 divisors, whose sum is σ = 4457658750. Its totient is φ = 4457658748.

The previous prime is 4457658721. The next prime is 4457658781. The reversal of 4457658749 is 9478567544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4411350724 + 46308025 = 66418^2 + 6805^2 .

It is a cyclic number.

It is not a de Polignac number, because 4457658749 - 2⁸ = 4457658493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4457658719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2228829374 + 2228829375.

It is an arithmetic number, because the mean of its divisors is an integer number (2228829375).

Almost surely, 2^4457658749 is an apocalyptic number.

It is an amenable number.

4457658749 is a deficient number, since it is larger than the sum of its proper divisors (1).

4457658749 is an equidigital number, since it uses as much as digits as its factorization.

4457658749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 33868800, while the sum is 59.

The square root of 4457658749 is about 66765.7003932408. The cubic root of 4457658749 is about 1645.7692345043.

The spelling of 4457658749 in words is "four billion, four hundred fifty-seven million, six hundred fifty-eight thousand, seven hundred forty-nine".