900138894139 has 2 divisors, whose sum is σ = 900138894140. Its totient is φ = 900138894138.

The previous prime is 900138894091. The next prime is 900138894163. The reversal of 900138894139 is 931498831009.

900138894139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 900138894139 - 2⁹ = 900138893627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 900138894139.

It is not a weakly prime, because it can be changed into another prime (900138894169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450069447069 + 450069447070.

It is an arithmetic number, because the mean of its divisors is an integer number (450069447070).

Almost surely, 2^900138894139 is an apocalyptic number.

900138894139 is a deficient number, since it is larger than the sum of its proper divisors (1).

900138894139 is an equidigital number, since it uses as much as digits as its factorization.

900138894139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1679616, while the sum is 55.

The spelling of 900138894139 in words is "nine hundred billion, one hundred thirty-eight million, eight hundred ninety-four thousand, one hundred thirty-nine".