2780036923 has 2 divisors, whose sum is σ = 2780036924. Its totient is φ = 2780036922.

The previous prime is 2780036867. The next prime is 2780036951. The reversal of 2780036923 is 3296300872.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2780036923 - 2⁹ = 2780036411 is a prime.

It is not a weakly prime, because it can be changed into another prime (2780036953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1390018461 + 1390018462.

It is an arithmetic number, because the mean of its divisors is an integer number (1390018462).

Almost surely, 2^2780036923 is an apocalyptic number.

2780036923 is a deficient number, since it is larger than the sum of its proper divisors (1).

2780036923 is an equidigital number, since it uses as much as digits as its factorization.

2780036923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 2780036923 is about 52726.0554469989. The cubic root of 2780036923 is about 1406.1020929463.

The spelling of 2780036923 in words is "two billion, seven hundred eighty million, thirty-six thousand, nine hundred twenty-three".