4781622891 has 8 divisors (see below), whose sum is σ = 6380306944. Its totient is φ = 3185343720.

The previous prime is 4781622877. The next prime is 4781622899. The reversal of 4781622891 is 1982261874.

It is a happy number.

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

It is not a de Polignac number, because 4781622891 - 2¹⁵ = 4781590123 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 4781622891.

It is not an unprimeable number, because it can be changed into a prime (4781622899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 596575 + ... + 604536.

It is an arithmetic number, because the mean of its divisors is an integer number (797538368).

Almost surely, 2^4781622891 is an apocalyptic number.

4781622891 is a deficient number, since it is larger than the sum of its proper divisors (1598684053).

4781622891 is a wasteful number, since it uses less digits than its factorization.

4781622891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1202441.

The product of its digits is 387072, while the sum is 48.

The square root of 4781622891 is about 69149.2797576374. The cubic root of 4781622891 is about 1684.7098199181.

It can be divided in two parts, 47816 and 22891, that added together give a palindrome (70707).

The spelling of 4781622891 in words is "four billion, seven hundred eighty-one million, six hundred twenty-two thousand, eight hundred ninety-one".