1443696680 has 32 divisors (see below), whose sum is σ = 3309611400. Its totient is φ = 566582016.

The previous prime is 1443696587. The next prime is 1443696689. The reversal of 1443696680 is 866963441.

It can be written as a sum of positive squares in 4 ways, for example, as 902762116 + 540934564 = 30046^2 + 23258^2 .

It is not an unprimeable number, because it can be changed into a prime (1443696689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338375 + ... + 342614.

Almost surely, 2^1443696680 is an apocalyptic number.

1443696680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1443696680 is an abundant number, since it is smaller than the sum of its proper divisors (1865914720).

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

1443696680 is a wasteful number, since it uses less digits than its factorization.

1443696680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681053 (or 681049 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 47.

The square root of 1443696680 is about 37996.0087377609. The cubic root of 1443696680 is about 1130.2087170264.

The spelling of 1443696680 in words is "one billion, four hundred forty-three million, six hundred ninety-six thousand, six hundred eighty".