2478790877 has 2 divisors, whose sum is σ = 2478790878. Its totient is φ = 2478790876.

The previous prime is 2478790861. The next prime is 2478790879. The reversal of 2478790877 is 7780978742.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1345862596 + 1132928281 = 36686^2 + 33659^2 .

It is a cyclic number.

It is not a de Polignac number, because 2478790877 - 2⁴ = 2478790861 is a prime.

It is a super-2 number, since 2×2478790877² = 12288808423796858258, which contains 22 as substring.

Together with 2478790879, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2478790879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1239395438 + 1239395439.

It is an arithmetic number, because the mean of its divisors is an integer number (1239395439).

Almost surely, 2^2478790877 is an apocalyptic number.

It is an amenable number.

2478790877 is a deficient number, since it is larger than the sum of its proper divisors (1).

2478790877 is an equidigital number, since it uses as much as digits as its factorization.

2478790877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11063808, while the sum is 59.

The square root of 2478790877 is about 49787.4570248371. The cubic root of 2478790877 is about 1353.3598755515.

The spelling of 2478790877 in words is "two billion, four hundred seventy-eight million, seven hundred ninety thousand, eight hundred seventy-seven".