1800060139 has 2 divisors, whose sum is σ = 1800060140. Its totient is φ = 1800060138.

The previous prime is 1800060083. The next prime is 1800060151. The reversal of 1800060139 is 9310600081.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1800060139 - 2¹³ = 1800051947 is a prime.

It is not a weakly prime, because it can be changed into another prime (1800060169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 900030069 + 900030070.

It is an arithmetic number, because the mean of its divisors is an integer number (900030070).

Almost surely, 2^1800060139 is an apocalyptic number.

1800060139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1800060139 is an equidigital number, since it uses as much as digits as its factorization.

1800060139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1800060139 is about 42427.1156101850. The cubic root of 1800060139 is about 1216.4539462803.

The spelling of 1800060139 in words is "one billion, eight hundred million, sixty thousand, one hundred thirty-nine".