1338464555 has 4 divisors (see below), whose sum is σ = 1606157472. Its totient is φ = 1070771640.

The previous prime is 1338464551. The next prime is 1338464581. The reversal of 1338464555 is 5554648331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1338464555 - 2² = 1338464551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1338464551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133846451 + ... + 133846460.

It is an arithmetic number, because the mean of its divisors is an integer number (401539368).

Almost surely, 2^1338464555 is an apocalyptic number.

1338464555 is a deficient number, since it is larger than the sum of its proper divisors (267692917).

1338464555 is an equidigital number, since it uses as much as digits as its factorization.

1338464555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267692916.

The product of its digits is 864000, while the sum is 44.

The square root of 1338464555 is about 36585.0318436379. The cubic root of 1338464555 is about 1102.0525190083.

The spelling of 1338464555 in words is "one billion, three hundred thirty-eight million, four hundred sixty-four thousand, five hundred fifty-five".