201776138 has 4 divisors (see below), whose sum is σ = 302664210. Its totient is φ = 100888068.

The previous prime is 201776131. The next prime is 201776147. The reversal of 201776138 is 831677102.

201776138 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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., 138462289 + 63313849 = 11767^2 + 7957^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201776098 and 201776107.

It is not an unprimeable number, because it can be changed into a prime (201776131) by changing a digit.

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, 50444033 + ... + 50444036.

Almost surely, 2^201776138 is an apocalyptic number.

201776138 is a deficient number, since it is larger than the sum of its proper divisors (100888072).

201776138 is a wasteful number, since it uses less digits than its factorization.

201776138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100888071.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 201776138 is about 14204.7927827195. The cubic root of 201776138 is about 586.5296011720.

The spelling of 201776138 in words is "two hundred one million, seven hundred seventy-six thousand, one hundred thirty-eight".