1443342645 has 40 divisors (see below), whose sum is σ = 2590089216. Its totient is φ = 768960864.

The previous prime is 1443342577. The next prime is 1443342679. The reversal of 1443342645 is 5462433441.

1443342645 is a `hidden beast` number, since 1 + 4 + 4 + 3 + 3 + 4 + 2 + 645 = 666.

It is not a de Polignac number, because 1443342645 - 2⁸ = 1443342389 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 672444 + ... + 674586.

Almost surely, 2^1443342645 is an apocalyptic number.

1443342645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1443342645 is a deficient number, since it is larger than the sum of its proper divisors (1146746571).

1443342645 is a wasteful number, since it uses less digits than its factorization.

1443342645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3823 (or 3814 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

The square root of 1443342645 is about 37991.3496075093. The cubic root of 1443342645 is about 1130.1163231598.

The spelling of 1443342645 in words is "one billion, four hundred forty-three million, three hundred forty-two thousand, six hundred forty-five".