1545645705 has 16 divisors (see below), whose sum is σ = 2475074880. Its totient is φ = 823663808.

The previous prime is 1545645679. The next prime is 1545645721. The reversal of 1545645705 is 5075465451.

It is a cyclic number.

It is not a de Polignac number, because 1545645705 - 2⁶ = 1545645641 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23487 + ... + 60356.

It is an arithmetic number, because the mean of its divisors is an integer number (154692180).

Almost surely, 2^1545645705 is an apocalyptic number.

1545645705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1545645705 is a deficient number, since it is larger than the sum of its proper divisors (929429175).

1545645705 is a wasteful number, since it uses less digits than its factorization.

1545645705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85080.

The product of its (nonzero) digits is 420000, while the sum is 42.

The square root of 1545645705 is about 39314.7008763897. The cubic root of 1545645705 is about 1156.2098115859.

The spelling of 1545645705 in words is "one billion, five hundred forty-five million, six hundred forty-five thousand, seven hundred five".