1836161240 has 16 divisors (see below), whose sum is σ = 4131362880. Its totient is φ = 734464480.

The previous prime is 1836161221. The next prime is 1836161281. The reversal of 1836161240 is 421616381.

It is a junction number, because it is equal to n+sod(n) for n = 1836161197 and 1836161206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22951976 + ... + 22952055.

It is an arithmetic number, because the mean of its divisors is an integer number (258210180).

Almost surely, 2^1836161240 is an apocalyptic number.

1836161240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1836161240 is an abundant number, since it is smaller than the sum of its proper divisors (2295201640).

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

1836161240 is a wasteful number, since it uses less digits than its factorization.

1836161240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45904042 (or 45904038 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1836161240 is about 42850.4520396226. The cubic root of 1836161240 is about 1224.5323751724.

The spelling of 1836161240 in words is "one billion, eight hundred thirty-six million, one hundred sixty-one thousand, two hundred forty".