201541838 has 4 divisors (see below), whose sum is σ = 302312760. Its totient is φ = 100770918.

The previous prime is 201541811. The next prime is 201541843. The reversal of 201541838 is 838145102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 838145102 = 2 ⋅419072551.

It is a super-2 number, since 2×201541838² = 81238224928836488, 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 (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50385458 + ... + 50385461.

It is an arithmetic number, because the mean of its divisors is an integer number (75578190).

Almost surely, 2^201541838 is an apocalyptic number.

201541838 is a deficient number, since it is larger than the sum of its proper divisors (100770922).

201541838 is a wasteful number, since it uses less digits than its factorization.

201541838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100770921.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 201541838 is about 14196.5431707863. The cubic root of 201541838 is about 586.3024895606.

The spelling of 201541838 in words is "two hundred one million, five hundred forty-one thousand, eight hundred thirty-eight".