1804691712 has 216 divisors, whose sum is σ = 5240946816. Its totient is φ = 550928384.

The previous prime is 1804691689. The next prime is 1804691719. The reversal of 1804691712 is 2171964081.

It is a super-2 number, since 2×1804691712² = 6513824350722981888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1804691719) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10431658 + ... + 10431830.

Almost surely, 2^1804691712 is an apocalyptic number.

1804691712 is a gapful number since it is divisible by the number (12) 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 1804691712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2620473408).

1804691712 is an abundant number, since it is smaller than the sum of its proper divisors (3436255104).

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

1804691712 is a wasteful number, since it uses less digits than its factorization.

1804691712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273 (or 242 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 1804691712 is about 42481.6632442752. The cubic root of 1804691712 is about 1217.4963688513.

The spelling of 1804691712 in words is "one billion, eight hundred four million, six hundred ninety-one thousand, seven hundred twelve".