201893994 has 24 divisors (see below), whose sum is σ = 438941412. Its totient is φ = 67066560.

The previous prime is 201893971. The next prime is 201894001. The reversal of 201893994 is 499398102.

It can be written as a sum of positive squares in 2 ways, for example, as 140067225 + 61826769 = 11835^2 + 7863^2 .

It is a super-2 number, since 2×201893994² = 81522369626544072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13867 + ... + 24414.

Almost surely, 2^201893994 is an apocalyptic number.

201893994 is an abundant number, since it is smaller than the sum of its proper divisors (237047418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201893994 is a wasteful number, since it uses less digits than its factorization.

201893994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38582 (or 38579 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 201893994 is about 14208.9406360925. The cubic root of 201893994 is about 586.6437748615.

The spelling of 201893994 in words is "two hundred one million, eight hundred ninety-three thousand, nine hundred ninety-four".