9918636045 has 16 divisors (see below), whose sum is σ = 16070703360. Its totient is φ = 5222977344.

The previous prime is 9918636041. The next prime is 9918636053. The reversal of 9918636045 is 5406368199.

It is not a de Polignac number, because 9918636045 - 2² = 9918636041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9918636041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4183894 + ... + 4186263.

It is an arithmetic number, because the mean of its divisors is an integer number (1004418960).

Almost surely, 2^9918636045 is an apocalyptic number.

It is an amenable number.

9918636045 is a deficient number, since it is larger than the sum of its proper divisors (6152067315).

9918636045 is a wasteful number, since it uses less digits than its factorization.

9918636045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8370244.

The product of its (nonzero) digits is 1399680, while the sum is 51.

The square root of 9918636045 is about 99592.3493296548. The cubic root of 9918636045 is about 2148.5756598150.

The spelling of 9918636045 in words is "nine billion, nine hundred eighteen million, six hundred thirty-six thousand, forty-five".