1338908545 has 16 divisors (see below), whose sum is σ = 1805513472. Its totient is φ = 945743040.

The previous prime is 1338908539. The next prime is 1338908551. The reversal of 1338908545 is 5458098331.

It is an interprime number because it is at equal distance from previous prime (1338908539) and next prime (1338908551).

It is not a de Polignac number, because 1338908545 - 2⁵ = 1338908513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1338908495 and 1338908504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 446301 + ... + 449290.

It is an arithmetic number, because the mean of its divisors is an integer number (112844592).

Almost surely, 2^1338908545 is an apocalyptic number.

It is an amenable number.

1338908545 is a deficient number, since it is larger than the sum of its proper divisors (466604927).

1338908545 is a wasteful number, since it uses less digits than its factorization.

1338908545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895632.

The product of its (nonzero) digits is 518400, while the sum is 46.

The square root of 1338908545 is about 36591.0992592461. The cubic root of 1338908545 is about 1102.1743616583.

The spelling of 1338908545 in words is "one billion, three hundred thirty-eight million, nine hundred eight thousand, five hundred forty-five".