1840272019489 has 4 divisors (see below), whose sum is σ = 1840274841856. Its totient is φ = 1840269197124.

The previous prime is 1840272019451. The next prime is 1840272019511. The reversal of 1840272019489 is 9849102720481.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1840272019489 - 2¹⁷ = 1840271888417 is a prime.

It is a super-2 number, since 2×1840272019489² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1840272019889) 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, 122392 + ... + 1922374.

It is an arithmetic number, because the mean of its divisors is an integer number (460068710464).

Almost surely, 2^{1840272019489} is an apocalyptic number.

It is an amenable number.

1840272019489 is a deficient number, since it is larger than the sum of its proper divisors (2822367).

1840272019489 is a wasteful number, since it uses less digits than its factorization.

1840272019489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2822366.

The product of its (nonzero) digits is 2322432, while the sum is 55.

The spelling of 1840272019489 in words is "one trillion, eight hundred forty billion, two hundred seventy-two million, nineteen thousand, four hundred eighty-nine".