4997898128 has 20 divisors (see below), whose sum is σ = 9685034880. Its totient is φ = 2498534304.

The previous prime is 4997898109. The next prime is 4997898163. The reversal of 4997898128 is 8218987994.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88901 + ... + 133787.

It is an arithmetic number, because the mean of its divisors is an integer number (484251744).

Almost surely, 2^4997898128 is an apocalyptic number.

It is an amenable number.

4997898128 is a deficient number, since it is larger than the sum of its proper divisors (4687136752).

4997898128 is a wasteful number, since it uses less digits than its factorization.

4997898128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51854 (or 51848 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 65.

The square root of 4997898128 is about 70695.8140769310. The cubic root of 4997898128 is about 1709.7363030560.

The spelling of 4997898128 in words is "four billion, nine hundred ninety-seven million, eight hundred ninety-eight thousand, one hundred twenty-eight".