138002158 has 32 divisors (see below), whose sum is σ = 253015488. Its totient is φ = 55104000.

The previous prime is 138002147. The next prime is 138002197. The reversal of 138002158 is 851200831.

It is a super-2 number, since 2×138002158² = 38089191225313928, which contains 22 as substring.

It is a congruent number.

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, 21168 + ... + 26908.

It is an arithmetic number, because the mean of its divisors is an integer number (7906734).

Almost surely, 2^138002158 is an apocalyptic number.

138002158 is a deficient number, since it is larger than the sum of its proper divisors (115013330).

138002158 is a wasteful number, since it uses less digits than its factorization.

138002158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5868.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 138002158 is about 11747.4319746913. The cubic root of 138002158 is about 516.7676188907.

Adding to 138002158 its reverse (851200831), we get a palindrome (989202989).

The spelling of 138002158 in words is "one hundred thirty-eight million, two thousand, one hundred fifty-eight".