4978356731 has 2 divisors, whose sum is σ = 4978356732. Its totient is φ = 4978356730.

The previous prime is 4978356703. The next prime is 4978356769. The reversal of 4978356731 is 1376538794.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4978356731 - 2¹⁸ = 4978094587 is a prime.

It is a super-2 number, since 2×4978356731² = 49568071482186012722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4978356791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2489178365 + 2489178366.

It is an arithmetic number, because the mean of its divisors is an integer number (2489178366).

Almost surely, 2^4978356731 is an apocalyptic number.

4978356731 is a deficient number, since it is larger than the sum of its proper divisors (1).

4978356731 is an equidigital number, since it uses as much as digits as its factorization.

4978356731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3810240, while the sum is 53.

The square root of 4978356731 is about 70557.4711210656. The cubic root of 4978356731 is about 1707.5050801047.

The spelling of 4978356731 in words is "four billion, nine hundred seventy-eight million, three hundred fifty-six thousand, seven hundred thirty-one".