1144520605 has 8 divisors (see below), whose sum is σ = 1383450552. Its totient is φ = 908932608.

The previous prime is 1144520591. The next prime is 1144520609. The reversal of 1144520605 is 5060254411.

It can be written as a sum of positive squares in 4 ways, for example, as 219691684 + 924828921 = 14822^2 + 30411^2 .

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 1144520605 - 2²⁵ = 1110966173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144520609) 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, 834732 + ... + 836101.

It is an arithmetic number, because the mean of its divisors is an integer number (172931319).

Almost surely, 2^1144520605 is an apocalyptic number.

It is an amenable number.

1144520605 is a deficient number, since it is larger than the sum of its proper divisors (238929947).

1144520605 is a wasteful number, since it uses less digits than its factorization.

1144520605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670975.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 1144520605 is about 33830.7641799590. The cubic root of 1144520605 is about 1046.0229309476.

The spelling of 1144520605 in words is "one billion, one hundred forty-four million, five hundred twenty thousand, six hundred five".