7894463858 has 6 divisors (see below), whose sum is σ = 11841884271. Its totient is φ = 3947169102.

The previous prime is 7894463833. The next prime is 7894463861. The reversal of 7894463858 is 8583644987.

It can be written as a sum of positive squares in only one way, i.e., 3947231929 + 3947231929 = 62827^2 + 62827^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=62827.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7894463858.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 94241 + ... + 157067.

Almost surely, 2^7894463858 is an apocalyptic number.

7894463858 is a deficient number, since it is larger than the sum of its proper divisors (3947420413).

7894463858 is an frugal number, since it uses more digits than its factorization.

7894463858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125656 (or 62829 counting only the distinct ones).

The product of its digits is 46448640, while the sum is 62.

The square root of 7894463858 is about 88850.7954832144. The cubic root of 7894463858 is about 1991.1663623661.

The spelling of 7894463858 in words is "seven billion, eight hundred ninety-four million, four hundred sixty-three thousand, eight hundred fifty-eight".