8193746900 has 18 divisors (see below), whose sum is σ = 17780430990. Its totient is φ = 3277498720.

The previous prime is 8193746861. The next prime is 8193746909. The reversal of 8193746900 is 96473918.

It can be written as a sum of positive squares in 3 ways, for example, as 2788262416 + 5405484484 = 52804^2 + 73522^2 .

It is a super-2 number, since 2×8193746900² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8193746909) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 40968635 + ... + 40968834.

Almost surely, 2^8193746900 is an apocalyptic number.

It is an amenable number.

8193746900 is an abundant number, since it is smaller than the sum of its proper divisors (9586684090).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8193746900 is a wasteful number, since it uses less digits than its factorization.

8193746900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81937483 (or 81937476 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 8193746900 is about 90519.3178277433. The cubic root of 8193746900 is about 2016.0169610592.

The spelling of 8193746900 in words is "eight billion, one hundred ninety-three million, seven hundred forty-six thousand, nine hundred".