1144353657 has 8 divisors (see below), whose sum is σ = 1615558176. Its totient is φ = 718025792.

The previous prime is 1144353643. The next prime is 1144353667. The reversal of 1144353657 is 7563534411.

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 1144353657 - 2¹¹ = 1144351609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1144353607) 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, 11219103 + ... + 11219204.

It is an arithmetic number, because the mean of its divisors is an integer number (201944772).

Almost surely, 2^1144353657 is an apocalyptic number.

1144353657 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1144353657 is a deficient number, since it is larger than the sum of its proper divisors (471204519).

1144353657 is a wasteful number, since it uses less digits than its factorization.

1144353657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22438327.

The product of its digits is 151200, while the sum is 39.

The square root of 1144353657 is about 33828.2966907883. The cubic root of 1144353657 is about 1045.9720683340.

The spelling of 1144353657 in words is "one billion, one hundred forty-four million, three hundred fifty-three thousand, six hundred fifty-seven".