138161522 has 16 divisors (see below), whose sum is σ = 210941952. Its totient is φ = 67858560.

The previous prime is 138161501. The next prime is 138161531. The reversal of 138161522 is 225161831.

It is a super-2 number, since 2×138161522² = 38177212322712968, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23522 + ... + 28802.

It is an arithmetic number, because the mean of its divisors is an integer number (13183872).

Almost surely, 2^138161522 is an apocalyptic number.

138161522 is a deficient number, since it is larger than the sum of its proper divisors (72780430).

138161522 is a wasteful number, since it uses less digits than its factorization.

138161522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5513.

The product of its digits is 2880, while the sum is 29.

The square root of 138161522 is about 11754.2129468544. The cubic root of 138161522 is about 516.9664623379.

The spelling of 138161522 in words is "one hundred thirty-eight million, one hundred sixty-one thousand, five hundred twenty-two".