1800972684 has 144 divisors (see below), whose sum is σ = 5632704000. Its totient is φ = 487407456.

The previous prime is 1800972671. The next prime is 1800972689. The reversal of 1800972684 is 4862790081.

It is not an unprimeable number, because it can be changed into a prime (1800972689) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 269617 + ... + 276215.

It is an arithmetic number, because the mean of its divisors is an integer number (39116000).

Almost surely, 2^1800972684 is an apocalyptic number.

1800972684 is a gapful number since it is divisible by the number (14) 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 1800972684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2816352000).

1800972684 is an abundant number, since it is smaller than the sum of its proper divisors (3831731316).

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

1800972684 is a wasteful number, since it uses less digits than its factorization.

1800972684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6657 (or 6630 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 1800972684 is about 42437.8685138639. The cubic root of 1800972684 is about 1216.6594730127.

The spelling of 1800972684 in words is "one billion, eight hundred million, nine hundred seventy-two thousand, six hundred eighty-four".