1144768557 has 8 divisors (see below), whose sum is σ = 1532692480. Its totient is φ = 760011840.

The previous prime is 1144768531. The next prime is 1144768561. The reversal of 1144768557 is 7558674411.

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

It is not a de Polignac number, because 1144768557 - 2¹⁴ = 1144752173 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 (1144768357) 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, 790957 + ... + 792402.

It is an arithmetic number, because the mean of its divisors is an integer number (191586560).

Almost surely, 2^1144768557 is an apocalyptic number.

It is an amenable number.

1144768557 is a deficient number, since it is larger than the sum of its proper divisors (387923923).

1144768557 is a wasteful number, since it uses less digits than its factorization.

1144768557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583603.

The product of its digits is 940800, while the sum is 48.

The square root of 1144768557 is about 33834.4285750476. The cubic root of 1144768557 is about 1046.0984632270.

The spelling of 1144768557 in words is "one billion, one hundred forty-four million, seven hundred sixty-eight thousand, five hundred fifty-seven".