1145643045 has 8 divisors (see below), whose sum is σ = 1833028896. Its totient is φ = 611009616.

The previous prime is 1145643011. The next prime is 1145643047. The reversal of 1145643045 is 5403465411.

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

It is not a de Polignac number, because 1145643045 - 2⁷ = 1145642917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1145642997 and 1145643015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145643047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38188087 + ... + 38188116.

It is an arithmetic number, because the mean of its divisors is an integer number (229128612).

Almost surely, 2^1145643045 is an apocalyptic number.

1145643045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1145643045 is a deficient number, since it is larger than the sum of its proper divisors (687385851).

1145643045 is an equidigital number, since it uses as much as digits as its factorization.

1145643045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76376211.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 1145643045 is about 33847.3491576519. The cubic root of 1145643045 is about 1046.3647667540.

The spelling of 1145643045 in words is "one billion, one hundred forty-five million, six hundred forty-three thousand, forty-five".