1154139264 has 192 divisors, whose sum is σ = 3549648960. Its totient is φ = 359073792.

The previous prime is 1154139229. The next prime is 1154139277. The reversal of 1154139264 is 4629314511.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1138822 + ... + 1139834.

It is an arithmetic number, because the mean of its divisors is an integer number (18487755).

Almost surely, 2^1154139264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1154139264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1774824480).

1154139264 is an abundant number, since it is smaller than the sum of its proper divisors (2395509696).

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

1154139264 is a wasteful number, since it uses less digits than its factorization.

1154139264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099 (or 1084 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 1154139264 is about 33972.6252150169. The cubic root of 1154139264 is about 1048.9450520003.

It can be divided in two parts, 11541 and 39264, that added together give a palindrome (50805).

The spelling of 1154139264 in words is "one billion, one hundred fifty-four million, one hundred thirty-nine thousand, two hundred sixty-four".