1138510464 has 256 divisors, whose sum is σ = 3845775360. Its totient is φ = 290304000.

The previous prime is 1138510447. The next prime is 1138510487. The reversal of 1138510464 is 4640158311.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1082739 + ... + 1083789.

It is an arithmetic number, because the mean of its divisors is an integer number (15022560).

Almost surely, 2^1138510464 is an apocalyptic number.

1138510464 is a gapful number since it is divisible by the number (14) 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 1138510464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1922887680).

1138510464 is an abundant number, since it is smaller than the sum of its proper divisors (2707264896).

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

1138510464 is a wasteful number, since it uses less digits than its factorization.

1138510464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119 (or 1107 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 1138510464 is about 33741.8206977632. The cubic root of 1138510464 is about 1044.1887476004.

Adding to 1138510464 its reverse (4640158311), we get a palindrome (5778668775).

The spelling of 1138510464 in words is "one billion, one hundred thirty-eight million, five hundred ten thousand, four hundred sixty-four".