201890379 has 4 divisors (see below), whose sum is σ = 269187176. Its totient is φ = 134593584.

The previous prime is 201890369. The next prime is 201890387. The reversal of 201890379 is 973098102.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 201890379 - 2⁵ = 201890347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201890329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33648394 + ... + 33648399.

It is an arithmetic number, because the mean of its divisors is an integer number (67296794).

Almost surely, 2^201890379 is an apocalyptic number.

201890379 is a deficient number, since it is larger than the sum of its proper divisors (67296797).

201890379 is an equidigital number, since it uses as much as digits as its factorization.

201890379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67296796.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 201890379 is about 14208.8134268840. The cubic root of 201890379 is about 586.6402734697.

The spelling of 201890379 in words is "two hundred one million, eight hundred ninety thousand, three hundred seventy-nine".