1810272040 has 64 divisors (see below), whose sum is σ = 4268505600. Its totient is φ = 689644032.

The previous prime is 1810272011. The next prime is 1810272041. The reversal of 1810272040 is 402720181.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1810271996 and 1810272014.

It is not an unprimeable number, because it can be changed into a prime (1810272041) 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 15 ways as a sum of consecutive naturals, for example, 215764 + ... + 223996.

It is an arithmetic number, because the mean of its divisors is an integer number (66695400).

Almost surely, 2^1810272040 is an apocalyptic number.

1810272040 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 1810272040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2134252800).

1810272040 is an abundant number, since it is smaller than the sum of its proper divisors (2458233560).

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

1810272040 is a wasteful number, since it uses less digits than its factorization.

1810272040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8506 (or 8502 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 1810272040 is about 42547.2918057072. The cubic root of 1810272040 is about 1218.7499603243.

The spelling of 1810272040 in words is "one billion, eight hundred ten million, two hundred seventy-two thousand, forty".