1445431616 has 28 divisors (see below), whose sum is σ = 2878896960. Its totient is φ = 720040320.

The previous prime is 1445431607. The next prime is 1445431639. The reversal of 1445431616 is 6161345441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24326 + ... + 59013.

Almost surely, 2^1445431616 is an apocalyptic number.

1445431616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1445431616 is a deficient number, since it is larger than the sum of its proper divisors (1433465344).

1445431616 is an equidigital number, since it uses as much as digits as its factorization.

1445431616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83622 (or 83612 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 1445431616 is about 38018.8323860689. The cubic root of 1445431616 is about 1130.6612716556.

The spelling of 1445431616 in words is "one billion, four hundred forty-five million, four hundred thirty-one thousand, six hundred sixteen".