4891631 has 8 divisors (see below), whose sum is σ = 5268240. Its totient is φ = 4524928.

The previous prime is 4891591. The next prime is 4891639. The reversal of 4891631 is 1361984.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 4891631 - 2⁶ = 4891567 is a prime.

It is a super-2 number, since 2×4891631² = 47856107680322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4891639) 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, 1436 + ... + 3441.

It is an arithmetic number, because the mean of its divisors is an integer number (658530).

Almost surely, 2^4891631 is an apocalyptic number.

4891631 is a deficient number, since it is larger than the sum of its proper divisors (376609).

4891631 is a wasteful number, since it uses less digits than its factorization.

4891631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4953.

The product of its digits is 5184, while the sum is 32.

The square root of 4891631 is about 2211.7031898517. The cubic root of 4891631 is about 169.7531712061.

The spelling of 4891631 in words is "four million, eight hundred ninety-one thousand, six hundred thirty-one".