205201938 has 16 divisors (see below), whose sum is σ = 432004320. Its totient is φ = 64800576.

The previous prime is 205201933. The next prime is 205201943. The reversal of 205201938 is 839102502.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (205201933) and next prime (205201943).

It is not an unprimeable number, because it can be changed into a prime (205201933) 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 in 7 ways as a sum of consecutive naturals, for example, 899895 + ... + 900122.

It is an arithmetic number, because the mean of its divisors is an integer number (27000270).

Almost surely, 2^205201938 is an apocalyptic number.

205201938 is an abundant number, since it is smaller than the sum of its proper divisors (226802382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205201938 is a wasteful number, since it uses less digits than its factorization.

205201938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800041.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 205201938 is about 14324.8713083225. The cubic root of 205201938 is about 589.8304003567.

The spelling of 205201938 in words is "two hundred five million, two hundred one thousand, nine hundred thirty-eight".