1836273387520 has 288 divisors, whose sum is σ = 5215516258680. Its totient is φ = 616366080000.

The previous prime is 1836273387491. The next prime is 1836273387547. The reversal of 1836273387520 is 257833726381.

It can be written as a sum of positive squares in 4 ways, for example, as 1332196107264 + 504077280256 = 1154208^2 + 709984^2 .

It is a Harshad number since it is a multiple of its sum of digits (55).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16050520 + ... + 16164520.

Almost surely, 2^{1836273387520} is an apocalyptic number.

1836273387520 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 1836273387520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2607758129340).

1836273387520 is an abundant number, since it is smaller than the sum of its proper divisors (3379242871160).

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

1836273387520 is a wasteful number, since it uses less digits than its factorization.

1836273387520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114063 (or 114032 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 55.

The spelling of 1836273387520 in words is "one trillion, eight hundred thirty-six billion, two hundred seventy-three million, three hundred eighty-seven thousand, five hundred twenty".