201830993 has 16 divisors (see below), whose sum is σ = 249465216. Its totient is φ = 159010560.

The previous prime is 201830989. The next prime is 201831011. The reversal of 201830993 is 399038102.

It is a cyclic number.

It is not a de Polignac number, because 201830993 - 2² = 201830989 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201830963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17330 + ... + 26532.

It is an arithmetic number, because the mean of its divisors is an integer number (15591576).

Almost surely, 2^201830993 is an apocalyptic number.

It is an amenable number.

201830993 is a deficient number, since it is larger than the sum of its proper divisors (47634223).

201830993 is a wasteful number, since it uses less digits than its factorization.

201830993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9464.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 201830993 is about 14206.7235138860. The cubic root of 201830993 is about 586.5827478034.

The spelling of 201830993 in words is "two hundred one million, eight hundred thirty thousand, nine hundred ninety-three".