1138357248 has 88 divisors (see below), whose sum is σ = 3467650752. Its totient is φ = 325238784.

The previous prime is 1138357237. The next prime is 1138357273. The reversal of 1138357248 is 8427538311.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4965 + ... + 47972.

Almost surely, 2^1138357248 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 1138357248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1733825376).

1138357248 is an abundant number, since it is smaller than the sum of its proper divisors (2329293504).

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

1138357248 is an equidigital number, since it uses as much as digits as its factorization.

1138357248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52967 (or 52949 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 1138357248 is about 33739.5502044707. The cubic root of 1138357248 is about 1044.1419046404.

The spelling of 1138357248 in words is "one billion, one hundred thirty-eight million, three hundred fifty-seven thousand, two hundred forty-eight".