201073819 has 4 divisors (see below), whose sum is σ = 203026096. Its totient is φ = 199121544.

The previous prime is 201073811. The next prime is 201073823. The reversal of 201073819 is 918370102.

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

It is a cyclic number.

It is not a de Polignac number, because 201073819 - 2³ = 201073811 is a prime.

It is a super-2 number, since 2×201073819² = 80861361374489522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201073811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 975984 + ... + 976189.

It is an arithmetic number, because the mean of its divisors is an integer number (50756524).

Almost surely, 2^201073819 is an apocalyptic number.

201073819 is a deficient number, since it is larger than the sum of its proper divisors (1952277).

201073819 is a wasteful number, since it uses less digits than its factorization.

201073819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1952276.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 201073819 is about 14180.0500351727. The cubic root of 201073819 is about 585.8483020069.

The spelling of 201073819 in words is "two hundred one million, seventy-three thousand, eight hundred nineteen".