1338741648 has 40 divisors (see below), whose sum is σ = 3842685600. Its totient is φ = 446247072.

The previous prime is 1338741641. The next prime is 1338741731. The reversal of 1338741648 is 8461478331.

It is not an unprimeable number, because it can be changed into a prime (1338741641) 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, 1549038 + ... + 1549901.

It is an arithmetic number, because the mean of its divisors is an integer number (96067140).

Almost surely, 2^1338741648 is an apocalyptic number.

1338741648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1338741648 is an abundant number, since it is smaller than the sum of its proper divisors (2503943952).

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

1338741648 is a wasteful number, since it uses less digits than its factorization.

1338741648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3098956 (or 3098944 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 1338741648 is about 36588.8186199008. The cubic root of 1338741648 is about 1102.1285638481.

The spelling of 1338741648 in words is "one billion, three hundred thirty-eight million, seven hundred forty-one thousand, six hundred forty-eight".