1338725816 has 32 divisors (see below), whose sum is σ = 2567946240. Its totient is φ = 653989728.

The previous prime is 1338725771. The next prime is 1338725821. The reversal of 1338725816 is 6185278331.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240521 + ... + 246023.

It is an arithmetic number, because the mean of its divisors is an integer number (80248320).

Almost surely, 2^1338725816 is an apocalyptic number.

It is an amenable number.

1338725816 is a deficient number, since it is larger than the sum of its proper divisors (1229220424).

1338725816 is a wasteful number, since it uses less digits than its factorization.

1338725816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6203 (or 6199 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 1338725816 is about 36588.6022690127. The cubic root of 1338725816 is about 1102.1242192288.

The spelling of 1338725816 in words is "one billion, three hundred thirty-eight million, seven hundred twenty-five thousand, eight hundred sixteen".