1138335744 has 224 divisors, whose sum is σ = 3743187840. Its totient is φ = 299630592.

The previous prime is 1138335739. The next prime is 1138335761. The reversal of 1138335744 is 4475338311.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 2236162 + ... + 2236670.

It is an arithmetic number, because the mean of its divisors is an integer number (16710660).

Almost surely, 2^1138335744 is an apocalyptic number.

1138335744 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 1138335744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1871593920).

1138335744 is an abundant number, since it is smaller than the sum of its proper divisors (2604852096).

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

1138335744 is an equidigital number, since it uses as much as digits as its factorization.

1138335744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558 (or 534 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 1138335744 is about 33739.2315265182. The cubic root of 1138335744 is about 1044.1353298535.

The spelling of 1138335744 in words is "one billion, one hundred thirty-eight million, three hundred thirty-five thousand, seven hundred forty-four".