191540098 has 4 divisors (see below), whose sum is σ = 287310150. Its totient is φ = 95770048.

The previous prime is 191540093. The next prime is 191540117. The reversal of 191540098 is 890045191.

191540098 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 187607809 + 3932289 = 13697^2 + 1983^2 .

It is not an unprimeable number, because it can be changed into a prime (191540093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47885023 + ... + 47885026.

Almost surely, 2^191540098 is an apocalyptic number.

191540098 is a deficient number, since it is larger than the sum of its proper divisors (95770052).

191540098 is an equidigital number, since it uses as much as digits as its factorization.

191540098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95770051.

The product of its (nonzero) digits is 12960, while the sum is 37.

The square root of 191540098 is about 13839.8012268963. The cubic root of 191540098 is about 576.4388393949.

The spelling of 191540098 in words is "one hundred ninety-one million, five hundred forty thousand, ninety-eight".