194945570 has 24 divisors (see below), whose sum is σ = 359700372. Its totient is φ = 76069760.

The previous prime is 194945561. The next prime is 194945573. The reversal of 194945570 is 75549491.

It can be written as a sum of positive squares in 6 ways, for example, as 24930049 + 170015521 = 4993^2 + 13039^2 .

It is not an unprimeable number, because it can be changed into a prime (194945573) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 11012 + ... + 22608.

Almost surely, 2^194945570 is an apocalyptic number.

194945570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

194945570 is a deficient number, since it is larger than the sum of its proper divisors (164754802).

194945570 is a wasteful number, since it uses less digits than its factorization.

194945570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11686 (or 11645 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 44.

The square root of 194945570 is about 13962.2910011216. The cubic root of 194945570 is about 579.8350402855.

The spelling of 194945570 in words is "one hundred ninety-four million, nine hundred forty-five thousand, five hundred seventy".