1836957990 has 32 divisors (see below), whose sum is σ = 5038513920. Its totient is φ = 419876064.

The previous prime is 1836957989. The next prime is 1836958021. The reversal of 1836957990 is 997596381.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1836957990.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4373500 + ... + 4373919.

It is an arithmetic number, because the mean of its divisors is an integer number (157453560).

Almost surely, 2^1836957990 is an apocalyptic number.

1836957990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1836957990 is an abundant number, since it is smaller than the sum of its proper divisors (3201555930).

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

1836957990 is a wasteful number, since it uses less digits than its factorization.

1836957990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8747436.

The product of its (nonzero) digits is 3674160, while the sum is 57.

The square root of 1836957990 is about 42859.7478993986. The cubic root of 1836957990 is about 1224.7094665709.

The spelling of 1836957990 in words is "one billion, eight hundred thirty-six million, nine hundred fifty-seven thousand, nine hundred ninety".