1045640345 has 8 divisors (see below), whose sum is σ = 1275338760. Its totient is φ = 822798720.

The previous prime is 1045640311. The next prime is 1045640363. The reversal of 1045640345 is 5430465401.

It can be written as a sum of positive squares in 4 ways, for example, as 123121216 + 922519129 = 11096^2 + 30373^2 .

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

It is not a de Polignac number, because 1045640345 - 2¹⁰ = 1045639321 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1713860 + ... + 1714469.

It is an arithmetic number, because the mean of its divisors is an integer number (159417345).

Almost surely, 2^1045640345 is an apocalyptic number.

It is an amenable number.

1045640345 is a deficient number, since it is larger than the sum of its proper divisors (229698415).

1045640345 is an equidigital number, since it uses as much as digits as its factorization.

1045640345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3428395.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 1045640345 is about 32336.3625814655. The cubic root of 1045640345 is about 1014.9876950954.

The spelling of 1045640345 in words is "one billion, forty-five million, six hundred forty thousand, three hundred forty-five".