185703030993393 has 6 divisors (see below), whose sum is σ = 268237711434914. Its totient is φ = 123802020662256.

The previous prime is 185703030993353. The next prime is 185703030993401. The reversal of 185703030993393 is 393399030307581.

185703030993393 is a `hidden beast` number, since 185 + 7 + 0 + 3 + 0 + 30 + 99 + 339 + 3 = 666.

185703030993393 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 104028739504704 + 81674291488689 = 10199448^2 + 9037383^2 .

It is not a de Polignac number, because 185703030993393 - 2¹⁶ = 185703030927857 is a prime.

It is a super-2 number, since 2×185703030993393² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 185703030993393.

It is not an unprimeable number, because it can be changed into a prime (185703030993353) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10316835055180 + ... + 10316835055197.

Almost surely, 2^{185703030993393} is an apocalyptic number.

It is an amenable number.

185703030993393 is a deficient number, since it is larger than the sum of its proper divisors (82534680441521).

185703030993393 is a wasteful number, since it uses less digits than its factorization.

185703030993393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20633670110383 (or 20633670110380 counting only the distinct ones).

The product of its (nonzero) digits is 49601160, while the sum is 63.

The spelling of 185703030993393 in words is "one hundred eighty-five trillion, seven hundred three billion, thirty million, nine hundred ninety-three thousand, three hundred ninety-three".