199250428631 has 8 divisors (see below), whose sum is σ = 202864044240. Its totient is φ = 195644696128.

The previous prime is 199250428627. The next prime is 199250428639. The reversal of 199250428631 is 136824052991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 199250428631 - 2² = 199250428627 is a prime.

It is a super-2 number, since 2×199250428631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 199250428631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199250428639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1919756 + ... + 2020881.

It is an arithmetic number, because the mean of its divisors is an integer number (25358005530).

Almost surely, 2^199250428631 is an apocalyptic number.

199250428631 is a deficient number, since it is larger than the sum of its proper divisors (3613615609).

199250428631 is an equidigital number, since it uses as much as digits as its factorization.

199250428631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3941553.

The product of its (nonzero) digits is 933120, while the sum is 50.

The spelling of 199250428631 in words is "one hundred ninety-nine billion, two hundred fifty million, four hundred twenty-eight thousand, six hundred thirty-one".