1338909069 has 32 divisors (see below), whose sum is σ = 1962302976. Its totient is φ = 808657920.

The previous prime is 1338909059. The next prime is 1338909073. The reversal of 1338909069 is 9609098331.

It is a happy number.

It is not a de Polignac number, because 1338909069 - 2¹³ = 1338900877 is a prime.

It is a super-2 number, since 2×1338909069² = 3585354990100893522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1338909029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 141639 + ... + 150795.

It is an arithmetic number, because the mean of its divisors is an integer number (61321968).

Almost surely, 2^1338909069 is an apocalyptic number.

It is an amenable number.

1338909069 is a deficient number, since it is larger than the sum of its proper divisors (623393907).

1338909069 is a wasteful number, since it uses less digits than its factorization.

1338909069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9285.

The product of its (nonzero) digits is 314928, while the sum is 48.

The square root of 1338909069 is about 36591.1064194566. The cubic root of 1338909069 is about 1102.1745054419.

The spelling of 1338909069 in words is "one billion, three hundred thirty-eight million, nine hundred nine thousand, sixty-nine".