4966991786 has 4 divisors (see below), whose sum is σ = 7450487682. Its totient is φ = 2483495892.

The previous prime is 4966991737. The next prime is 4966991789. The reversal of 4966991786 is 6871996694.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4819830625 + 147161161 = 69425^2 + 12131^2 .

It is not an unprimeable number, because it can be changed into a prime (4966991789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1241747945 + ... + 1241747948.

Almost surely, 2^4966991786 is an apocalyptic number.

4966991786 is a deficient number, since it is larger than the sum of its proper divisors (2483495896).

4966991786 is a wasteful number, since it uses less digits than its factorization.

4966991786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2483495895.

The product of its digits is 35271936, while the sum is 65.

The square root of 4966991786 is about 70476.8883109917. Note that the first 3 decimals coincide. The cubic root of 4966991786 is about 1706.2047523037.

The spelling of 4966991786 in words is "four billion, nine hundred sixty-six million, nine hundred ninety-one thousand, seven hundred eighty-six".