1330801840 has 80 divisors (see below), whose sum is σ = 3179582208. Its totient is φ = 517724928.

The previous prime is 1330801811. The next prime is 1330801841. The reversal of 1330801840 is 481080331.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 1330801799 and 1330801808.

It is not an unprimeable number, because it can be changed into a prime (1330801841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 972837 + ... + 974203.

Almost surely, 2^1330801840 is an apocalyptic number.

1330801840 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 1330801840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1589791104).

1330801840 is an abundant number, since it is smaller than the sum of its proper divisors (1848780368).

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

1330801840 is a wasteful number, since it uses less digits than its factorization.

1330801840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1706 (or 1700 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1330801840 is about 36480.1567979086. The cubic root of 1330801840 is about 1099.9454077590.

The spelling of 1330801840 in words is "one billion, three hundred thirty million, eight hundred one thousand, eight hundred forty".