1149854772 has 144 divisors (see below), whose sum is σ = 3209492160. Its totient is φ = 318827520.

The previous prime is 1149854743. The next prime is 1149854779. The reversal of 1149854772 is 2774589411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149854779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 912679 + ... + 913937.

It is an arithmetic number, because the mean of its divisors is an integer number (22288140).

Almost surely, 2^1149854772 is an apocalyptic number.

1149854772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1149854772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1604746080).

1149854772 is an abundant number, since it is smaller than the sum of its proper divisors (2059637388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1149854772 is a wasteful number, since it uses less digits than its factorization.

1149854772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342 (or 1329 counting only the distinct ones).

The product of its digits is 564480, while the sum is 48.

The square root of 1149854772 is about 33909.5085779785. The cubic root of 1149854772 is about 1047.6454487474.

The spelling of 1149854772 in words is "one billion, one hundred forty-nine million, eight hundred fifty-four thousand, seven hundred seventy-two".