1144663531 has 8 divisors (see below), whose sum is σ = 1314446400. Its totient is φ = 985834440.

The previous prime is 1144663529. The next prime is 1144663547. The reversal of 1144663531 is 1353664411.

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 1144663531 - 2¹ = 1144663529 is a prime.

It is a super-2 number, since 2×1144663531² = 2620509198402775922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1144666531) 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, 2738221 + ... + 2738638.

It is an arithmetic number, because the mean of its divisors is an integer number (164305800).

Almost surely, 2^1144663531 is an apocalyptic number.

1144663531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1144663531 is a deficient number, since it is larger than the sum of its proper divisors (169782869).

1144663531 is a wasteful number, since it uses less digits than its factorization.

1144663531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5476889.

The product of its digits is 25920, while the sum is 34.

The square root of 1144663531 is about 33832.8764813162. The cubic root of 1144663531 is about 1046.0664710551.

The spelling of 1144663531 in words is "one billion, one hundred forty-four million, six hundred sixty-three thousand, five hundred thirty-one".