194252513 has 12 divisors (see below), whose sum is σ = 243350100. Its totient is φ = 153693792.

The previous prime is 194252483. The next prime is 194252533. The reversal of 194252513 is 315252491.

It can be written as a sum of positive squares in 2 ways, for example, as 27636049 + 166616464 = 5257^2 + 12908^2 .

It is not a de Polignac number, because 194252513 - 2⁶ = 194252449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 194252513.

It is not an unprimeable number, because it can be changed into a prime (194252533) 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, 151838 + ... + 153111.

It is an arithmetic number, because the mean of its divisors is an integer number (20279175).

Almost surely, 2^194252513 is an apocalyptic number.

194252513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

194252513 is a deficient number, since it is larger than the sum of its proper divisors (49097587).

194252513 is a wasteful number, since it uses less digits than its factorization.

194252513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304976 (or 304969 counting only the distinct ones).

The product of its digits is 10800, while the sum is 32.

The square root of 194252513 is about 13937.4500178476. The cubic root of 194252513 is about 579.1470945913.

The spelling of 194252513 in words is "one hundred ninety-four million, two hundred fifty-two thousand, five hundred thirteen".