4943661858 has 12 divisors (see below), whose sum is σ = 10711267398. Its totient is φ = 1647887280.

The previous prime is 4943661823. The next prime is 4943661859. The reversal of 4943661858 is 8581663494.

It can be written as a sum of positive squares in only one way, i.e., 4752309969 + 191351889 = 68937^2 + 13833^2 .

It is not an unprimeable number, because it can be changed into a prime (4943661859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 137323923 + ... + 137323958.

Almost surely, 2^4943661858 is an apocalyptic number.

4943661858 is an abundant number, since it is smaller than the sum of its proper divisors (5767605540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4943661858 is a wasteful number, since it uses less digits than its factorization.

4943661858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274647889 (or 274647886 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 54.

The square root of 4943661858 is about 70311.1787555862. The cubic root of 4943661858 is about 1703.5292147317.

The spelling of 4943661858 in words is "four billion, nine hundred forty-three million, six hundred sixty-one thousand, eight hundred fifty-eight".