1938800011 has 2 divisors, whose sum is σ = 1938800012. Its totient is φ = 1938800010.

The previous prime is 1938799997. The next prime is 1938800021. The reversal of 1938800011 is 1100088391.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1938800011 - 2⁵ = 1938799979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1938800021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 969400005 + 969400006.

It is an arithmetic number, because the mean of its divisors is an integer number (969400006).

Almost surely, 2^1938800011 is an apocalyptic number.

1938800011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1938800011 is an equidigital number, since it uses as much as digits as its factorization.

1938800011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 31.

The square root of 1938800011 is about 44031.8068105319. The cubic root of 1938800011 is about 1246.9365004567.

The spelling of 1938800011 in words is "one billion, nine hundred thirty-eight million, eight hundred thousand, eleven".