2640435193 has 8 divisors (see below), whose sum is σ = 2882157696. Its totient is φ = 2398993200.

The previous prime is 2640435191. The next prime is 2640435197. The reversal of 2640435193 is 3915340462.

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 2640435193 - 2¹ = 2640435191 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2640435191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50193 + ... + 88318.

It is an arithmetic number, because the mean of its divisors is an integer number (360269712).

Almost surely, 2^2640435193 is an apocalyptic number.

It is an amenable number.

2640435193 is a deficient number, since it is larger than the sum of its proper divisors (241722503).

2640435193 is a wasteful number, since it uses less digits than its factorization.

2640435193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140255.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 2640435193 is about 51385.1651062834. The cubic root of 2640435193 is about 1382.1605854614.

The spelling of 2640435193 in words is "two billion, six hundred forty million, four hundred thirty-five thousand, one hundred ninety-three".