4457861894 has 8 divisors (see below), whose sum is σ = 6688765728. Its totient is φ = 2228273320.

The previous prime is 4457861887. The next prime is 4457861917. The reversal of 4457861894 is 4981687544.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320297 + ... + 333924.

It is an arithmetic number, because the mean of its divisors is an integer number (836095716).

Almost surely, 2^4457861894 is an apocalyptic number.

4457861894 is a deficient number, since it is larger than the sum of its proper divisors (2230903834).

4457861894 is a wasteful number, since it uses less digits than its factorization.

4457861894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657630.

The product of its digits is 7741440, while the sum is 56.

The square root of 4457861894 is about 66767.2217034676. The cubic root of 4457861894 is about 1645.7942345272.

The spelling of 4457861894 in words is "four billion, four hundred fifty-seven million, eight hundred sixty-one thousand, eight hundred ninety-four".