201870851 has 8 divisors (see below), whose sum is σ = 248456544. Its totient is φ = 159721920.

The previous prime is 201870829. The next prime is 201870863. The reversal of 201870851 is 158078102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 201870851 - 2¹⁴ = 201854467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201870451) 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, 1109090 + ... + 1109271.

It is an arithmetic number, because the mean of its divisors is an integer number (31057068).

Almost surely, 2^201870851 is an apocalyptic number.

201870851 is a deficient number, since it is larger than the sum of its proper divisors (46585693).

201870851 is a wasteful number, since it uses less digits than its factorization.

201870851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2218381.

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 201870851 is about 14208.1262311397. The cubic root of 201870851 is about 586.6213584514.

The spelling of 201870851 in words is "two hundred one million, eight hundred seventy thousand, eight hundred fifty-one".