7139785901 has 2 divisors, whose sum is σ = 7139785902. Its totient is φ = 7139785900.

The previous prime is 7139785889. The next prime is 7139785927. The reversal of 7139785901 is 1095879317.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6987288100 + 152497801 = 83590^2 + 12349^2 .

It is a cyclic number.

It is not a de Polignac number, because 7139785901 - 2²⁶ = 7072677037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7139785901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7139785981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3569892950 + 3569892951.

It is an arithmetic number, because the mean of its divisors is an integer number (3569892951).

Almost surely, 2^7139785901 is an apocalyptic number.

It is an amenable number.

7139785901 is a deficient number, since it is larger than the sum of its proper divisors (1).

7139785901 is an equidigital number, since it uses as much as digits as its factorization.

7139785901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 476280, while the sum is 50.

The square root of 7139785901 is about 84497.2538074463. The cubic root of 7139785901 is about 1925.5807232919.

The spelling of 7139785901 in words is "seven billion, one hundred thirty-nine million, seven hundred eighty-five thousand, nine hundred one".