1445329823 has 12 divisors (see below), whose sum is σ = 1683713880. Its totient is φ = 1237077072.

The previous prime is 1445329819. The next prime is 1445329841. The reversal of 1445329823 is 3289235441.

It is not a de Polignac number, because 1445329823 - 2² = 1445329819 is a prime.

It is a super-2 number, since 2×1445329823² = 4177956594506422658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445329813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13940 + ... + 55542.

It is an arithmetic number, because the mean of its divisors is an integer number (140309490).

Almost surely, 2^1445329823 is an apocalyptic number.

1445329823 is a deficient number, since it is larger than the sum of its proper divisors (238384057).

1445329823 is an equidigital number, since it uses as much as digits as its factorization.

1445329823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42326 (or 42319 counting only the distinct ones).

The product of its digits is 207360, while the sum is 41.

The square root of 1445329823 is about 38017.4936443738. The cubic root of 1445329823 is about 1130.6347291559.

The spelling of 1445329823 in words is "one billion, four hundred forty-five million, three hundred twenty-nine thousand, eight hundred twenty-three".