4891123004 has 6 divisors (see below), whose sum is σ = 8559465264. Its totient is φ = 2445561500.

The previous prime is 4891122979. The next prime is 4891123007. The reversal of 4891123004 is 4003211984.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4891123007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611390372 + ... + 611390379.

It is an arithmetic number, because the mean of its divisors is an integer number (1426577544).

Almost surely, 2^4891123004 is an apocalyptic number.

It is an amenable number.

4891123004 is a deficient number, since it is larger than the sum of its proper divisors (3668342260).

4891123004 is a wasteful number, since it uses less digits than its factorization.

4891123004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222780755 (or 1222780753 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 4891123004 is about 69936.5641420852. The cubic root of 4891123004 is about 1697.4729471231.

Adding to 4891123004 its reverse (4003211984), we get a palindrome (8894334988).

The spelling of 4891123004 in words is "four billion, eight hundred ninety-one million, one hundred twenty-three thousand, four".