4626887891 has 4 divisors (see below), whose sum is σ = 4629478872. Its totient is φ = 4624296912.

The previous prime is 4626887887. The next prime is 4626887899. The reversal of 4626887891 is 1987886264.

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

It is a cyclic number.

It is not a de Polignac number, because 4626887891 - 2² = 4626887887 is a prime.

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 4626887891.

It is not an unprimeable number, because it can be changed into a prime (4626887899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1292810 + ... + 1296383.

It is an arithmetic number, because the mean of its divisors is an integer number (1157369718).

Almost surely, 2^4626887891 is an apocalyptic number.

4626887891 is a deficient number, since it is larger than the sum of its proper divisors (2590981).

4626887891 is a wasteful number, since it uses less digits than its factorization.

4626887891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2590980.

The product of its digits is 9289728, while the sum is 59.

The square root of 4626887891 is about 68021.2311782138. The cubic root of 4626887891 is about 1666.3375930617.

The spelling of 4626887891 in words is "four billion, six hundred twenty-six million, eight hundred eighty-seven thousand, eight hundred ninety-one".