1154461540 has 48 divisors (see below), whose sum is σ = 2534999040. Its totient is φ = 440795520.

The previous prime is 1154461513. The next prime is 1154461571. The reversal of 1154461540 is 451644511.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246541 + ... + 251179.

It is an arithmetic number, because the mean of its divisors is an integer number (52812480).

Almost surely, 2^1154461540 is an apocalyptic number.

1154461540 is a gapful number since it is divisible by the number (10) 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 1154461540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1267499520).

1154461540 is an abundant number, since it is smaller than the sum of its proper divisors (1380537500).

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

1154461540 is a wasteful number, since it uses less digits than its factorization.

1154461540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5212 (or 5210 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 1154461540 is about 33977.3680558103. The cubic root of 1154461540 is about 1049.0426769478.

The spelling of 1154461540 in words is "one billion, one hundred fifty-four million, four hundred sixty-one thousand, five hundred forty".