199001531008 has 32 divisors (see below), whose sum is σ = 453083844960. Its totient is φ = 85286370048.

The previous prime is 199001530963. The next prime is 199001531077. The reversal of 199001531008 is 800135100991.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111049066 + ... + 111050857.

It is an arithmetic number, because the mean of its divisors is an integer number (14158870155).

Almost surely, 2^199001531008 is an apocalyptic number.

It is an amenable number.

199001531008 is an abundant number, since it is smaller than the sum of its proper divisors (254082313952).

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

199001531008 is an equidigital number, since it uses as much as digits as its factorization.

199001531008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222099944 (or 222099932 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 37.

Adding to 199001531008 its reverse (800135100991), we get a palindrome (999136631999).

The spelling of 199001531008 in words is "one hundred ninety-nine billion, one million, five hundred thirty-one thousand, eight".