4631781894 has 32 divisors (see below), whose sum is σ = 9515176704. Its totient is φ = 1502266080.

The previous prime is 4631781881. The next prime is 4631781923. The reversal of 4631781894 is 4981871364.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33724 + ... + 101984.

It is an arithmetic number, because the mean of its divisors is an integer number (297349272).

Almost surely, 2^4631781894 is an apocalyptic number.

4631781894 is an abundant number, since it is smaller than the sum of its proper divisors (4883394810).

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

4631781894 is a wasteful number, since it uses less digits than its factorization.

4631781894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68572.

The product of its digits is 1161216, while the sum is 51.

The square root of 4631781894 is about 68057.1957547473. The cubic root of 4631781894 is about 1666.9248983789.

The spelling of 4631781894 in words is "four billion, six hundred thirty-one million, seven hundred eighty-one thousand, eight hundred ninety-four".