4897447731 has 16 divisors (see below), whose sum is σ = 7915067520. Its totient is φ = 2968149960.

The previous prime is 4897447729. The next prime is 4897447739. The reversal of 4897447731 is 1377447984.

4897447731 is a `hidden beast` number, since 48 + 97 + 447 + 73 + 1 = 666.

It is not a de Polignac number, because 4897447731 - 2¹ = 4897447729 is a prime.

It is a super-2 number, since 2×4897447731² = 47969988555754096722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4897447739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8244565 + ... + 8245158.

It is an arithmetic number, because the mean of its divisors is an integer number (494691720).

Almost surely, 2^4897447731 is an apocalyptic number.

4897447731 is a deficient number, since it is larger than the sum of its proper divisors (3017619789).

4897447731 is a wasteful number, since it uses less digits than its factorization.

4897447731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16489743 (or 16489737 counting only the distinct ones).

The product of its digits is 4741632, while the sum is 54.

The square root of 4897447731 is about 69981.7671325896. The cubic root of 4897447731 is about 1698.2043012303.

The spelling of 4897447731 in words is "four billion, eight hundred ninety-seven million, four hundred forty-seven thousand, seven hundred thirty-one".