1801249704 has 256 divisors, whose sum is σ = 5512320000. Its totient is φ = 543013632.

The previous prime is 1801249693. The next prime is 1801249721. The reversal of 1801249704 is 4079421081.

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

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 10411762 + ... + 10411934.

It is an arithmetic number, because the mean of its divisors is an integer number (21532500).

Almost surely, 2^1801249704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1801249704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2756160000).

1801249704 is an abundant number, since it is smaller than the sum of its proper divisors (3711070296).

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

1801249704 is a wasteful number, since it uses less digits than its factorization.

1801249704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309 (or 299 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 1801249704 is about 42441.1322186390. The cubic root of 1801249704 is about 1216.7218507361.

The spelling of 1801249704 in words is "one billion, eight hundred one million, two hundred forty-nine thousand, seven hundred four".