191900102 has 8 divisors (see below), whose sum is σ = 288075312. Its totient is φ = 95875000.

The previous prime is 191900053. The next prime is 191900117. The reversal of 191900102 is 201009191.

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

It is a super-2 number, since 2×191900102² = 73651298295220808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 34274 + ... + 39477.

It is an arithmetic number, because the mean of its divisors is an integer number (36009414).

Almost surely, 2^191900102 is an apocalyptic number.

191900102 is a deficient number, since it is larger than the sum of its proper divisors (96175210).

191900102 is a wasteful number, since it uses less digits than its factorization.

191900102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75054.

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 191900102 is about 13852.8012329637. The cubic root of 191900102 is about 576.7997567044.

Adding to 191900102 its reverse (201009191), we get a palindrome (392909293).

The spelling of 191900102 in words is "one hundred ninety-one million, nine hundred thousand, one hundred two".