201990692 has 24 divisors (see below), whose sum is σ = 370331136. Its totient is φ = 96217088.

The previous prime is 201990683. The next prime is 201990697. The reversal of 201990692 is 296099102.

It is not an unprimeable number, because it can be changed into a prime (201990697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19373 + ... + 27915.

It is an arithmetic number, because the mean of its divisors is an integer number (15430464).

Almost surely, 2^201990692 is an apocalyptic number.

It is an amenable number.

201990692 is a deficient number, since it is larger than the sum of its proper divisors (168340444).

201990692 is a wasteful number, since it uses less digits than its factorization.

201990692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8827 (or 8825 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 201990692 is about 14212.3429454823. The cubic root of 201990692 is about 586.7374184356.

The spelling of 201990692 in words is "two hundred one million, nine hundred ninety thousand, six hundred ninety-two".