201370138 has 4 divisors (see below), whose sum is σ = 302055210. Its totient is φ = 100685068.

The previous prime is 201370133. The next prime is 201370159. The reversal of 201370138 is 831073102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 831073102 = 2 ⋅415536551.

It can be written as a sum of positive squares in only one way, i.e., 165045409 + 36324729 = 12847^2 + 6027^2 .

It is not an unprimeable number, because it can be changed into a prime (201370133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50342533 + ... + 50342536.

Almost surely, 2^201370138 is an apocalyptic number.

201370138 is a deficient number, since it is larger than the sum of its proper divisors (100685072).

201370138 is a wasteful number, since it uses less digits than its factorization.

201370138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100685071.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 201370138 is about 14190.4946354946. The cubic root of 201370138 is about 586.1359455823.

The spelling of 201370138 in words is "two hundred one million, three hundred seventy thousand, one hundred thirty-eight".