1149646553 has 8 divisors (see below), whose sum is σ = 1268252640. Its totient is φ = 1033389280.

The previous prime is 1149646523. The next prime is 1149646567. The reversal of 1149646553 is 3556469411.

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

It is not a de Polignac number, because 1149646553 - 2⁶ = 1149646489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1149646523) 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, 586175 + ... + 588132.

It is an arithmetic number, because the mean of its divisors is an integer number (158531580).

Almost surely, 2^1149646553 is an apocalyptic number.

It is an amenable number.

1149646553 is a deficient number, since it is larger than the sum of its proper divisors (118606087).

1149646553 is a wasteful number, since it uses less digits than its factorization.

1149646553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174407.

The product of its digits is 388800, while the sum is 44.

The square root of 1149646553 is about 33906.4382234407. The cubic root of 1149646553 is about 1047.5822080491.

The spelling of 1149646553 in words is "one billion, one hundred forty-nine million, six hundred forty-six thousand, five hundred fifty-three".