2636340538 has 8 divisors (see below), whose sum is σ = 4258703988. Its totient is φ = 1216772544.

The previous prime is 2636340529. The next prime is 2636340541. The reversal of 2636340538 is 8350436362.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2632408249 + 3932289 = 51307^2 + 1983^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 2636340538.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 50698831 + ... + 50698882.

Almost surely, 2^2636340538 is an apocalyptic number.

2636340538 is a deficient number, since it is larger than the sum of its proper divisors (1622363450).

2636340538 is a wasteful number, since it uses less digits than its factorization.

2636340538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101397728.

The product of its (nonzero) digits is 311040, while the sum is 40.

The square root of 2636340538 is about 51345.3068741438. The cubic root of 2636340538 is about 1381.4457539612.

The spelling of 2636340538 in words is "two billion, six hundred thirty-six million, three hundred forty thousand, five hundred thirty-eight".