2139635747 has 8 divisors (see below), whose sum is σ = 2217831840. Its totient is φ = 2061734080.

The previous prime is 2139635737. The next prime is 2139635749. The reversal of 2139635747 is 7475369312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2139635747 - 2⁴ = 2139635731 is a prime.

It is a super-2 number, since 2×2139635747² = 9156082259680496018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2139635749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58754 + ... + 87927.

It is an arithmetic number, because the mean of its divisors is an integer number (277228980).

Almost surely, 2^2139635747 is an apocalyptic number.

2139635747 is a deficient number, since it is larger than the sum of its proper divisors (78196093).

2139635747 is a wasteful number, since it uses less digits than its factorization.

2139635747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147213.

The product of its digits is 952560, while the sum is 47.

The square root of 2139635747 is about 46256.1968497195. The cubic root of 2139635747 is about 1288.5856234692.

The spelling of 2139635747 in words is "two billion, one hundred thirty-nine million, six hundred thirty-five thousand, seven hundred forty-seven".