194953540 has 12 divisors (see below), whose sum is σ = 409402476. Its totient is φ = 77981408.

The previous prime is 194953469. The next prime is 194953553. The reversal of 194953540 is 45359491.

It can be written as a sum of positive squares in 2 ways, for example, as 140754496 + 54199044 = 11864^2 + 7362^2 .

It is a junction number, because it is equal to n+sod(n) for n = 194953493 and 194953502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4873819 + ... + 4873858.

It is an arithmetic number, because the mean of its divisors is an integer number (34116873).

Almost surely, 2^194953540 is an apocalyptic number.

194953540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194953540 is an abundant number, since it is smaller than the sum of its proper divisors (214448936).

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

194953540 is a wasteful number, since it uses less digits than its factorization.

194953540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9747686 (or 9747684 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 194953540 is about 13962.5764098178. The cubic root of 194953540 is about 579.8429420164.

The spelling of 194953540 in words is "one hundred ninety-four million, nine hundred fifty-three thousand, five hundred forty".