1154011340 has 48 divisors (see below), whose sum is σ = 2589602400. Its totient is φ = 430451712.

The previous prime is 1154011337. The next prime is 1154011403. The reversal of 1154011340 is 431104511.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21491 + ... + 52629.

It is an arithmetic number, because the mean of its divisors is an integer number (53950050).

Almost surely, 2^1154011340 is an apocalyptic number.

1154011340 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 1154011340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1294801200).

1154011340 is an abundant number, since it is smaller than the sum of its proper divisors (1435591060).

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

1154011340 is a wasteful number, since it uses less digits than its factorization.

1154011340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31274 (or 31272 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1154011340 is about 33970.7424116695. The cubic root of 1154011340 is about 1048.9062957863.

Adding to 1154011340 its reverse (431104511), we get a palindrome (1585115851).

The spelling of 1154011340 in words is "one billion, one hundred fifty-four million, eleven thousand, three hundred forty".