1154403264 has 56 divisors (see below), whose sum is σ = 3490699648. Its totient is φ = 329829120.

The previous prime is 1154403251. The next prime is 1154403269. The reversal of 1154403264 is 4623044511.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154403269) 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, 428122 + ... + 430809.

Almost surely, 2^1154403264 is an apocalyptic number.

1154403264 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1154403264 is an abundant number, since it is smaller than the sum of its proper divisors (2336296384).

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

1154403264 is an equidigital number, since it uses as much as digits as its factorization.

1154403264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858953 (or 858943 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 1154403264 is about 33976.5104741496. The cubic root of 1154403264 is about 1049.0250251285.

Adding to 1154403264 its reverse (4623044511), we get a palindrome (5777447775).

The spelling of 1154403264 in words is "one billion, one hundred fifty-four million, four hundred three thousand, two hundred sixty-four".