1154051440 has 40 divisors (see below), whose sum is σ = 2687225328. Its totient is φ = 460922880.

The previous prime is 1154051417. The next prime is 1154051441. The reversal of 1154051440 is 441504511.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154051441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44080 + ... + 65200.

Almost surely, 2^1154051440 is an apocalyptic number.

1154051440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1154051440 is an abundant number, since it is smaller than the sum of its proper divisors (1533173888).

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

1154051440 is a wasteful number, since it uses less digits than its factorization.

1154051440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21817 (or 21811 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 1154051440 is about 33971.3326203139. The cubic root of 1154051440 is about 1048.9184449030.

Adding to 1154051440 its reverse (441504511), we get a palindrome (1595555951).

The spelling of 1154051440 in words is "one billion, one hundred fifty-four million, fifty-one thousand, four hundred forty".