1445923505 has 16 divisors (see below), whose sum is σ = 1870546944. Its totient is φ = 1066633920.

The previous prime is 1445923487. The next prime is 1445923513. The reversal of 1445923505 is 5053295441.

It is not a de Polignac number, because 1445923505 - 2¹⁶ = 1445857969 is a prime.

It is a super-2 number, since 2×1445923505² = 4181389564622970050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53192 + ... + 75638.

It is an arithmetic number, because the mean of its divisors is an integer number (116909184).

Almost surely, 2^1445923505 is an apocalyptic number.

It is an amenable number.

1445923505 is a deficient number, since it is larger than the sum of its proper divisors (424623439).

1445923505 is a wasteful number, since it uses less digits than its factorization.

1445923505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23456.

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 1445923505 is about 38025.3008535107. The cubic root of 1445923505 is about 1130.7895140342.

The spelling of 1445923505 in words is "one billion, four hundred forty-five million, nine hundred twenty-three thousand, five hundred five".