1813948079 has 2 divisors, whose sum is σ = 1813948080. Its totient is φ = 1813948078.

The previous prime is 1813948067. The next prime is 1813948109. The reversal of 1813948079 is 9708493181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1813948079 - 2⁸ = 1813947823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1813948979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 906974039 + 906974040.

It is an arithmetic number, because the mean of its divisors is an integer number (906974040).

Almost surely, 2^1813948079 is an apocalyptic number.

1813948079 is a deficient number, since it is larger than the sum of its proper divisors (1).

1813948079 is an equidigital number, since it uses as much as digits as its factorization.

1813948079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 50.

The square root of 1813948079 is about 42590.4693446785. The cubic root of 1813948079 is about 1219.5743563526.

The spelling of 1813948079 in words is "one billion, eight hundred thirteen million, nine hundred forty-eight thousand, seventy-nine".