201983138 has 16 divisors (see below), whose sum is σ = 354703104. Its totient is φ = 84452640.

The previous prime is 201983113. The next prime is 201983141. The reversal of 201983138 is 831389102.

It is a junction number, because it is equal to n+sod(n) for n = 201983098 and 201983107.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175370 + ... + 176517.

It is an arithmetic number, because the mean of its divisors is an integer number (22168944).

Almost surely, 2^201983138 is an apocalyptic number.

201983138 is a deficient number, since it is larger than the sum of its proper divisors (152719966).

201983138 is a wasteful number, since it uses less digits than its factorization.

201983138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351937.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 201983138 is about 14212.0771880820. The cubic root of 201983138 is about 586.7301041221.

The spelling of 201983138 in words is "two hundred one million, nine hundred eighty-three thousand, one hundred thirty-eight".