191928201 has 8 divisors (see below), whose sum is σ = 256415040. Its totient is φ = 127696752.

The previous prime is 191928199. The next prime is 191928203. The reversal of 191928201 is 102829191.

191928201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (191928199) and next prime (191928203).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 191928201 - 2¹ = 191928199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (191928203) 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, 62086 + ... + 65103.

It is an arithmetic number, because the mean of its divisors is an integer number (32051880).

Almost surely, 2^191928201 is an apocalyptic number.

It is an amenable number.

191928201 is a deficient number, since it is larger than the sum of its proper divisors (64486839).

191928201 is a wasteful number, since it uses less digits than its factorization.

191928201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127695.

The product of its (nonzero) digits is 2592, while the sum is 33.

The square root of 191928201 is about 13853.8153950455. The cubic root of 191928201 is about 576.8279079928.

The spelling of 191928201 in words is "one hundred ninety-one million, nine hundred twenty-eight thousand, two hundred one".