199841938937 has 4 divisors (see below), whose sum is σ = 199849328640. Its totient is φ = 199834549236.

The previous prime is 199841938931. The next prime is 199841938943. The reversal of 199841938937 is 739839148991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (199841938931) and next prime (199841938943).

It is a cyclic number.

It is not a de Polignac number, because 199841938937 - 2¹² = 199841934841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199841938931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3654137 + ... + 3708422.

It is an arithmetic number, because the mean of its divisors is an integer number (49962332160).

Almost surely, 2^199841938937 is an apocalyptic number.

It is an amenable number.

199841938937 is a deficient number, since it is larger than the sum of its proper divisors (7389703).

199841938937 is an equidigital number, since it uses as much as digits as its factorization.

199841938937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7389702.

The product of its digits is 105815808, while the sum is 71.

The spelling of 199841938937 in words is "one hundred ninety-nine billion, eight hundred forty-one million, nine hundred thirty-eight thousand, nine hundred thirty-seven".