195636490 has 16 divisors (see below), whose sum is σ = 402452352. Its totient is φ = 67075344.

The previous prime is 195636481. The next prime is 195636499. The reversal of 195636490 is 94636591.

It is an interprime number because it is at equal distance from previous prime (195636481) and next prime (195636499).

It is not an unprimeable number, because it can be changed into a prime (195636499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1397334 + ... + 1397473.

It is an arithmetic number, because the mean of its divisors is an integer number (25153272).

Almost surely, 2^195636490 is an apocalyptic number.

195636490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

195636490 is an abundant number, since it is smaller than the sum of its proper divisors (206815862).

195636490 is a wasteful number, since it uses less digits than its factorization.

195636490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2794821.

The product of its (nonzero) digits is 174960, while the sum is 43.

The square root of 195636490 is about 13987.0114749363. The cubic root of 195636490 is about 580.5192436897.

The spelling of 195636490 in words is "one hundred ninety-five million, six hundred thirty-six thousand, four hundred ninety".