1445311738 has 8 divisors (see below), whose sum is σ = 2334734388. Its totient is φ = 667066944.

The previous prime is 1445311691. The next prime is 1445311753. The reversal of 1445311738 is 8371135441.

It can be written as a sum of positive squares in 2 ways, for example, as 1444532049 + 779689 = 38007^2 + 883^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1445311697 and 1445311706.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27794431 + ... + 27794482.

Almost surely, 2^1445311738 is an apocalyptic number.

1445311738 is a deficient number, since it is larger than the sum of its proper divisors (889422650).

1445311738 is a wasteful number, since it uses less digits than its factorization.

1445311738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55588928.

The product of its digits is 40320, while the sum is 37.

The square root of 1445311738 is about 38017.2557926003. The cubic root of 1445311738 is about 1130.6300133662.

The spelling of 1445311738 in words is "one billion, four hundred forty-five million, three hundred eleven thousand, seven hundred thirty-eight".