3561012139 has 2 divisors, whose sum is σ = 3561012140. Its totient is φ = 3561012138.

The previous prime is 3561012107. The next prime is 3561012157. The reversal of 3561012139 is 9312101653.

It is a happy number.

3561012139 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 an emirp because it is prime and its reverse (9312101653) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3561012139 - 2⁵ = 3561012107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3561012139.

It is not a weakly prime, because it can be changed into another prime (3561012179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1780506069 + 1780506070.

It is an arithmetic number, because the mean of its divisors is an integer number (1780506070).

Almost surely, 2^3561012139 is an apocalyptic number.

3561012139 is a deficient number, since it is larger than the sum of its proper divisors (1).

3561012139 is an equidigital number, since it uses as much as digits as its factorization.

3561012139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 3561012139 is about 59674.2167020230. The cubic root of 3561012139 is about 1527.0660362651.

The spelling of 3561012139 in words is "three billion, five hundred sixty-one million, twelve thousand, one hundred thirty-nine".