1154000661 has 8 divisors (see below), whose sum is σ = 1678546464. Its totient is φ = 699394320.

The previous prime is 1154000651. The next prime is 1154000677. The reversal of 1154000661 is 1660004511.

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

It is not a de Polignac number, because 1154000661 - 2⁵ = 1154000629 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154000621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17484826 + ... + 17484891.

It is an arithmetic number, because the mean of its divisors is an integer number (209818308).

Almost surely, 2^1154000661 is an apocalyptic number.

1154000661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1154000661 is a deficient number, since it is larger than the sum of its proper divisors (524545803).

1154000661 is a wasteful number, since it uses less digits than its factorization.

1154000661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34969731.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1154000661 is about 33970.5852319326. The cubic root of 1154000661 is about 1048.9030603170.

The spelling of 1154000661 in words is "one billion, one hundred fifty-four million, six hundred sixty-one", and thus it is an aban number.