2840201491 has 4 divisors (see below), whose sum is σ = 2989685800. Its totient is φ = 2690717184.

The previous prime is 2840201467. The next prime is 2840201503. The reversal of 2840201491 is 1941020482.

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 2840201491 - 2¹⁷ = 2840070419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2840201411) 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, 74742126 + ... + 74742163.

It is an arithmetic number, because the mean of its divisors is an integer number (747421450).

Almost surely, 2^2840201491 is an apocalyptic number.

2840201491 is a deficient number, since it is larger than the sum of its proper divisors (149484309).

2840201491 is a wasteful number, since it uses less digits than its factorization.

2840201491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149484308.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 2840201491 is about 53293.5407999881. The cubic root of 2840201491 is about 1416.1732399666.

The spelling of 2840201491 in words is "two billion, eight hundred forty million, two hundred one thousand, four hundred ninety-one".