4921904090 has 48 divisors (see below), whose sum is σ = 9820541952. Its totient is φ = 1772365056.

The previous prime is 4921904089. The next prime is 4921904101. The reversal of 4921904090 is 904091294.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29447 + ... + 103493.

It is an arithmetic number, because the mean of its divisors is an integer number (204594624).

Almost surely, 2^4921904090 is an apocalyptic number.

4921904090 is a deficient number, since it is larger than the sum of its proper divisors (4898637862).

4921904090 is a wasteful number, since it uses less digits than its factorization.

4921904090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74111 (or 74094 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 4921904090 is about 70156.2833251591. The cubic root of 4921904090 is about 1701.0263801951.

The spelling of 4921904090 in words is "four billion, nine hundred twenty-one million, nine hundred four thousand, ninety".