191850642 has 12 divisors (see below), whose sum is σ = 415676430. Its totient is φ = 63950208.

The previous prime is 191850641. The next prime is 191850653. The reversal of 191850642 is 246058191.

191850642 is a `hidden beast` number, since 1 + 9 + 1 + 8 + 5 + 0 + 642 = 666.

It can be written as a sum of positive squares in only one way, i.e., 191850201 + 441 = 13851^2 + 21^2 .

It is a junction number, because it is equal to n+sod(n) for n = 191850597 and 191850606.

It is not an unprimeable number, because it can be changed into a prime (191850641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5329167 + ... + 5329202.

Almost surely, 2^191850642 is an apocalyptic number.

191850642 is an abundant number, since it is smaller than the sum of its proper divisors (223825788).

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

191850642 is a wasteful number, since it uses less digits than its factorization.

191850642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10658377 (or 10658374 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 191850642 is about 13851.0159194191. The cubic root of 191850642 is about 576.7501979895.

The spelling of 191850642 in words is "one hundred ninety-one million, eight hundred fifty thousand, six hundred forty-two".