1839072340 has 24 divisors (see below), whose sum is σ = 4413773952. Its totient is φ = 630539040.

The previous prime is 1839072329. The next prime is 1839072349. The reversal of 1839072340 is 432709381.

It is a self number, because there is not a number n which added to its sum of digits gives 1839072340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1839072349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6567976 + ... + 6568255.

It is an arithmetic number, because the mean of its divisors is an integer number (183907248).

Almost surely, 2^1839072340 is an apocalyptic number.

1839072340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1839072340 is an abundant number, since it is smaller than the sum of its proper divisors (2574701612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1839072340 is a wasteful number, since it uses less digits than its factorization.

1839072340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13136247 (or 13136245 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 1839072340 is about 42884.4067231902. The cubic root of 1839072340 is about 1225.1791691286.

The spelling of 1839072340 in words is "one billion, eight hundred thirty-nine million, seventy-two thousand, three hundred forty".