1040045645 has 8 divisors (see below), whose sum is σ = 1250444256. Its totient is φ = 830443536.

The previous prime is 1040045621. The next prime is 1040045651. The reversal of 1040045645 is 5465400401.

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

It is a cyclic number.

It is not a de Polignac number, because 1040045645 - 2¹⁸ = 1039783501 is a prime.

It is a super-3 number, since 3×1040045645³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

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, 196247 + ... + 201476.

It is an arithmetic number, because the mean of its divisors is an integer number (156305532).

Almost surely, 2^1040045645 is an apocalyptic number.

It is an amenable number.

1040045645 is a deficient number, since it is larger than the sum of its proper divisors (210398611).

1040045645 is an equidigital number, since it uses as much as digits as its factorization.

1040045645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398251.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 1040045645 is about 32249.7386811118. The cubic root of 1040045645 is about 1013.1742259306.

The spelling of 1040045645 in words is "one billion, forty million, forty-five thousand, six hundred forty-five".