2478980731 has 2 divisors, whose sum is σ = 2478980732. Its totient is φ = 2478980730.

The previous prime is 2478980719. The next prime is 2478980747. The reversal of 2478980731 is 1370898742.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2478980731 - 2¹³ = 2478972539 is a prime.

It is a super-2 number, since 2×2478980731² = 12290690929338588722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2478980701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1239490365 + 1239490366.

It is an arithmetic number, because the mean of its divisors is an integer number (1239490366).

Almost surely, 2^2478980731 is an apocalyptic number.

2478980731 is a deficient number, since it is larger than the sum of its proper divisors (1).

2478980731 is an equidigital number, since it uses as much as digits as its factorization.

2478980731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 2478980731 is about 49789.3636332099. The cubic root of 2478980731 is about 1353.3944265671.

The spelling of 2478980731 in words is "two billion, four hundred seventy-eight million, nine hundred eighty thousand, seven hundred thirty-one".