191247134 has 16 divisors (see below), whose sum is σ = 310652160. Its totient is φ = 87778080.

The previous prime is 191247131. The next prime is 191247137. The reversal of 191247134 is 431742191.

It is an interprime number because it is at equal distance from previous prime (191247131) and next prime (191247137).

It is a self number, because there is not a number n which added to its sum of digits gives 191247134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191247131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15614 + ... + 25025.

It is an arithmetic number, because the mean of its divisors is an integer number (19415760).

Almost surely, 2^191247134 is an apocalyptic number.

191247134 is a deficient number, since it is larger than the sum of its proper divisors (119405026).

191247134 is a wasteful number, since it uses less digits than its factorization.

191247134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40835.

The product of its digits is 6048, while the sum is 32.

The square root of 191247134 is about 13829.2130651024. The cubic root of 191247134 is about 576.1447982643.

The spelling of 191247134 in words is "one hundred ninety-one million, two hundred forty-seven thousand, one hundred thirty-four".