6935136385 has 4 divisors (see below), whose sum is σ = 8322163668. Its totient is φ = 5548109104.

The previous prime is 6935136379. The next prime is 6935136469. The reversal of 6935136385 is 5836315396.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 793436224 + 6141700161 = 28168^2 + 78369^2 .

It is a cyclic number.

It is not a de Polignac number, because 6935136385 - 2¹¹ = 6935134337 is a prime.

It is a super-2 number, since 2×6935136385² = 96192233357101736450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 693513634 + ... + 693513643.

It is an arithmetic number, because the mean of its divisors is an integer number (2080540917).

Almost surely, 2^6935136385 is an apocalyptic number.

It is an amenable number.

6935136385 is a deficient number, since it is larger than the sum of its proper divisors (1387027283).

6935136385 is a wasteful number, since it uses less digits than its factorization.

6935136385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1387027282.

The product of its digits is 1749600, while the sum is 49.

The square root of 6935136385 is about 83277.4662498806. The cubic root of 6935136385 is about 1907.0042843375.

The spelling of 6935136385 in words is "six billion, nine hundred thirty-five million, one hundred thirty-six thousand, three hundred eighty-five".