191640962 has 4 divisors (see below), whose sum is σ = 287461446. Its totient is φ = 95820480.

The previous prime is 191640947. The next prime is 191640979. The reversal of 191640962 is 269046191.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 148620481 + 43020481 = 12191^2 + 6559^2 .

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 as a sum of consecutive naturals, namely, 47910239 + ... + 47910242.

Almost surely, 2^191640962 is an apocalyptic number.

191640962 is a deficient number, since it is larger than the sum of its proper divisors (95820484).

191640962 is an equidigital number, since it uses as much as digits as its factorization.

191640962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95820483.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 191640962 is about 13843.4447302685. Note that the first 3 decimals coincide. The cubic root of 191640962 is about 576.5400048513.

The spelling of 191640962 in words is "one hundred ninety-one million, six hundred forty thousand, nine hundred sixty-two".