1813874401 has 2 divisors, whose sum is σ = 1813874402. Its totient is φ = 1813874400.

The previous prime is 1813874357. The next prime is 1813874407. The reversal of 1813874401 is 1044783181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1676984401 + 136890000 = 40951^2 + 11700^2 .

It is a cyclic number.

It is not a de Polignac number, because 1813874401 - 2¹⁷ = 1813743329 is a prime.

It is not a weakly prime, because it can be changed into another prime (1813874407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 906937200 + 906937201.

It is an arithmetic number, because the mean of its divisors is an integer number (906937201).

Almost surely, 2^1813874401 is an apocalyptic number.

It is an amenable number.

1813874401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1813874401 is an equidigital number, since it uses as much as digits as its factorization.

1813874401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 1813874401 is about 42589.6043771247. The cubic root of 1813874401 is about 1219.5578441167.

The spelling of 1813874401 in words is "one billion, eight hundred thirteen million, eight hundred seventy-four thousand, four hundred one".