4891190263 has 4 divisors (see below), whose sum is σ = 4891677840. Its totient is φ = 4890702688.

The previous prime is 4891190237. The next prime is 4891190287. The reversal of 4891190263 is 3620911984.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4891190263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4891190233) 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, 228418 + ... + 248911.

It is an arithmetic number, because the mean of its divisors is an integer number (1222919460).

Almost surely, 2^4891190263 is an apocalyptic number.

4891190263 is a deficient number, since it is larger than the sum of its proper divisors (487577).

4891190263 is a wasteful number, since it uses less digits than its factorization.

4891190263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487576.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 4891190263 is about 69937.0449976263. The cubic root of 4891190263 is about 1697.4807278726.

The spelling of 4891190263 in words is "four billion, eight hundred ninety-one million, one hundred ninety thousand, two hundred sixty-three".