1445672345 has 8 divisors (see below), whose sum is σ = 1868253576. Its totient is φ = 1067573376.

The previous prime is 1445672309. The next prime is 1445672387. The reversal of 1445672345 is 5432765441.

It can be written as a sum of positive squares in 4 ways, for example, as 281702656 + 1163969689 = 16784^2 + 34117^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1445672345 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11120492 + ... + 11120621.

It is an arithmetic number, because the mean of its divisors is an integer number (233531697).

Almost surely, 2^1445672345 is an apocalyptic number.

It is an amenable number.

1445672345 is a deficient number, since it is larger than the sum of its proper divisors (422581231).

1445672345 is a wasteful number, since it uses less digits than its factorization.

1445672345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22241131.

The product of its digits is 403200, while the sum is 41.

The square root of 1445672345 is about 38021.9981721108. The cubic root of 1445672345 is about 1130.7240367253.

The spelling of 1445672345 in words is "one billion, four hundred forty-five million, six hundred seventy-two thousand, three hundred forty-five".