194932513 has 2 divisors, whose sum is σ = 194932514. Its totient is φ = 194932512.

The previous prime is 194932511. The next prime is 194932531. The reversal of 194932513 is 315239491.

194932513 = 9872² + 9873².

Together with next prime (194932531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97476129 + 97456384 = 9873^2 + 9872^2 .

It is a cyclic number.

It is not a de Polignac number, because 194932513 - 2¹ = 194932511 is a prime.

Together with 194932511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (194932511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97466256 + 97466257.

It is an arithmetic number, because the mean of its divisors is an integer number (97466257).

Almost surely, 2^194932513 is an apocalyptic number.

194932513 is the 9873-rd centered square number.

It is an amenable number.

194932513 is a deficient number, since it is larger than the sum of its proper divisors (1).

194932513 is an equidigital number, since it uses as much as digits as its factorization.

194932513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 37.

The square root of 194932513 is about 13961.8234124344. The cubic root of 194932513 is about 579.8220946632.

The spelling of 194932513 in words is "one hundred ninety-four million, nine hundred thirty-two thousand, five hundred thirteen".