201440019 has 32 divisors (see below), whose sum is σ = 299531520. Its totient is φ = 119398400.

The previous prime is 201440017. The next prime is 201440023. The reversal of 201440019 is 910044102.

It is not a de Polignac number, because 201440019 - 2¹ = 201440017 is a prime.

It is a super-2 number, since 2×201440019² = 81156162509440722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201439977 and 201440004.

It is not an unprimeable number, because it can be changed into a prime (201440017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 313939 + ... + 314579.

It is an arithmetic number, because the mean of its divisors is an integer number (9360360).

Almost surely, 2^201440019 is an apocalyptic number.

201440019 is a deficient number, since it is larger than the sum of its proper divisors (98091501).

201440019 is a wasteful number, since it uses less digits than its factorization.

201440019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 201440019 is about 14192.9566687142. The cubic root of 201440019 is about 586.2037395284.

The spelling of 201440019 in words is "two hundred one million, four hundred forty thousand, nineteen".