1836488340 has 144 divisors (see below), whose sum is σ = 5843964672. Its totient is φ = 466276608.

The previous prime is 1836488323. The next prime is 1836488341. The reversal of 1836488340 is 438846381.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1836488341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 310087 + ... + 315953.

It is an arithmetic number, because the mean of its divisors is an integer number (40583088).

Almost surely, 2^1836488340 is an apocalyptic number.

1836488340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1836488340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2921982336).

1836488340 is an abundant number, since it is smaller than the sum of its proper divisors (4007476332).

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

1836488340 is a wasteful number, since it uses less digits than its factorization.

1836488340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5966 (or 5961 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The square root of 1836488340 is about 42854.2686321911. The cubic root of 1836488340 is about 1224.6050849738.

The spelling of 1836488340 in words is "one billion, eight hundred thirty-six million, four hundred eighty-eight thousand, three hundred forty".