138326898 has 16 divisors (see below), whose sum is σ = 285578496. Its totient is φ = 44621520.

The previous prime is 138326893. The next prime is 138326911. The reversal of 138326898 is 898623831.

It is not an unprimeable number, because it can be changed into a prime (138326893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371661 + ... + 372032.

It is an arithmetic number, because the mean of its divisors is an integer number (17848656).

Almost surely, 2^138326898 is an apocalyptic number.

138326898 is an abundant number, since it is smaller than the sum of its proper divisors (147251598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138326898 is a wasteful number, since it uses less digits than its factorization.

138326898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743729.

The product of its digits is 497664, while the sum is 48.

The square root of 138326898 is about 11761.2455972996. The cubic root of 138326898 is about 517.1726455447.

The spelling of 138326898 in words is "one hundred thirty-eight million, three hundred twenty-six thousand, eight hundred ninety-eight".