201493138 has 32 divisors (see below), whose sum is σ = 396656640. Its totient is φ = 74370960.

The previous prime is 201493099. The next prime is 201493151. The reversal of 201493138 is 831394102.

It is a super-2 number, since 2×201493138² = 81198969322174088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31506 + ... + 37357.

It is an arithmetic number, because the mean of its divisors is an integer number (12395520).

Almost surely, 2^201493138 is an apocalyptic number.

201493138 is a deficient number, since it is larger than the sum of its proper divisors (195163502).

201493138 is a wasteful number, since it uses less digits than its factorization.

201493138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68902.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 201493138 is about 14194.8278608795. The cubic root of 201493138 is about 586.2552615976.

The spelling of 201493138 in words is "two hundred one million, four hundred ninety-three thousand, one hundred thirty-eight".