200195638 has 32 divisors (see below), whose sum is σ = 326712960. Its totient is φ = 91653120.

The previous prime is 200195623. The next prime is 200195651. The reversal of 200195638 is 836591002.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195568 + ... + 196588.

It is an arithmetic number, because the mean of its divisors is an integer number (10209780).

Almost surely, 2^200195638 is an apocalyptic number.

200195638 is a deficient number, since it is larger than the sum of its proper divisors (126517322).

200195638 is a wasteful number, since it uses less digits than its factorization.

200195638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1192.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 200195638 is about 14149.0507808828. The cubic root of 200195638 is about 584.9941684957.

The spelling of 200195638 in words is "two hundred million, one hundred ninety-five thousand, six hundred thirty-eight".