11154950689 has 9 divisors (see below), whose sum is σ = 11529779601. Its totient is φ = 10791945060.

The previous prime is 11154950663. The next prime is 11154950693. The reversal of 11154950689 is 98605945111.

It is a happy number.

The square root of 11154950689 is 105617.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 11154950689 - 2⁵ = 11154950657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11154950489) 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 8 ways as a sum of consecutive naturals, for example, 3272424 + ... + 3275830.

Almost surely, 2^11154950689 is an apocalyptic number.

11154950689 is the 105617-th square number.

11154950689 is the 52809-th centered octagonal number.

It is an amenable number.

11154950689 is a deficient number, since it is larger than the sum of its proper divisors (374828912).

11154950689 is an frugal number, since it uses more digits than its factorization.

11154950689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6876 (or 3438 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 49.

Multiplying 11154950689 by its sum of digits (49), we get a square (546592583761 = 739319²).

The spelling of 11154950689 in words is "eleven billion, one hundred fifty-four million, nine hundred fifty thousand, six hundred eighty-nine".