1809935472 has 80 divisors (see below), whose sum is σ = 4862679840. Its totient is φ = 579403776.

The previous prime is 1809935461. The next prime is 1809935483. The reversal of 1809935472 is 2745399081.

1809935472 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1809935461) and next prime (1809935483).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265288 + ... + 272024.

It is an arithmetic number, because the mean of its divisors is an integer number (60783498).

Almost surely, 2^1809935472 is an apocalyptic number.

1809935472 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 1809935472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2431339920).

1809935472 is an abundant number, since it is smaller than the sum of its proper divisors (3052744368).

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

1809935472 is a wasteful number, since it uses less digits than its factorization.

1809935472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6970 (or 6964 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 1809935472 is about 42543.3363994880. The cubic root of 1809935472 is about 1218.6744251467.

The spelling of 1809935472 in words is "one billion, eight hundred nine million, nine hundred thirty-five thousand, four hundred seventy-two".