1804756140 has 384 divisors, whose sum is σ = 6453780480. Its totient is φ = 423403200.

The previous prime is 1804756127. The next prime is 1804756181. The reversal of 1804756140 is 416574081.

It is a happy number.

1804756140 is a `hidden beast` number, since 18 + 0 + 47 + 561 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1804756095 and 1804756104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 58217925 + ... + 58217955.

It is an arithmetic number, because the mean of its divisors is an integer number (16806720).

Almost surely, 2^1804756140 is an apocalyptic number.

1804756140 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 1804756140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3226890240).

1804756140 is an abundant number, since it is smaller than the sum of its proper divisors (4649024340).

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

1804756140 is an equidigital number, since it uses as much as digits as its factorization.

1804756140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 52 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 1804756140 is about 42482.4215411504. The cubic root of 1804756140 is about 1217.5108569995.

The spelling of 1804756140 in words is "one billion, eight hundred four million, seven hundred fifty-six thousand, one hundred forty".