1338280648 has 32 divisors (see below), whose sum is σ = 2540640960. Its totient is φ = 660813120.

The previous prime is 1338280607. The next prime is 1338280651. The reversal of 1338280648 is 8460828331.

It is a super-2 number, since 2×1338280648² = 3581990185622599808, which contains 22 as substring.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

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, 325083 + ... + 329173.

It is an arithmetic number, because the mean of its divisors is an integer number (79395030).

Almost surely, 2^1338280648 is an apocalyptic number.

It is an amenable number.

1338280648 is a deficient number, since it is larger than the sum of its proper divisors (1202360312).

1338280648 is a wasteful number, since it uses less digits than its factorization.

1338280648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4597 (or 4593 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 43.

The square root of 1338280648 is about 36582.5183386819. The cubic root of 1338280648 is about 1102.0020421502.

The spelling of 1338280648 in words is "one billion, three hundred thirty-eight million, two hundred eighty thousand, six hundred forty-eight".