135667138 has 4 divisors (see below), whose sum is σ = 203500710. Its totient is φ = 67833568.

The previous prime is 135667099. The next prime is 135667151. The reversal of 135667138 is 831766531.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 115713049 + 19954089 = 10757^2 + 4467^2 .

It is a super-2 number, since 2×135667138² = 36811144666222088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 135667138.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33916783 + ... + 33916786.

Almost surely, 2^135667138 is an apocalyptic number.

135667138 is a deficient number, since it is larger than the sum of its proper divisors (67833572).

135667138 is an equidigital number, since it uses as much as digits as its factorization.

135667138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67833571.

The product of its digits is 90720, while the sum is 40.

The square root of 135667138 is about 11647.6237061471. The cubic root of 135667138 is about 513.8364254135.

The spelling of 135667138 in words is "one hundred thirty-five million, six hundred sixty-seven thousand, one hundred thirty-eight".