1445331394 has 16 divisors (see below), whose sum is σ = 2389064832. Its totient is φ = 651562128.

The previous prime is 1445331367. The next prime is 1445331397. The reversal of 1445331394 is 4931335441.

It is not an unprimeable number, because it can be changed into a prime (1445331397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 645274 + ... + 647509.

It is an arithmetic number, because the mean of its divisors is an integer number (149316552).

Almost surely, 2^1445331394 is an apocalyptic number.

1445331394 is a deficient number, since it is larger than the sum of its proper divisors (943733438).

1445331394 is a wasteful number, since it uses less digits than its factorization.

1445331394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292841.

The product of its digits is 77760, while the sum is 37.

The square root of 1445331394 is about 38017.5143059091. The cubic root of 1445331394 is about 1130.6351388032.

The spelling of 1445331394 in words is "one billion, four hundred forty-five million, three hundred thirty-one thousand, three hundred ninety-four".