191868659073 has 48 divisors (see below), whose sum is σ = 352103105536. Its totient is φ = 97940741760.

The previous prime is 191868659051. The next prime is 191868659083. The reversal of 191868659073 is 370956868191.

It is not a de Polignac number, because 191868659073 - 2¹⁰ = 191868658049 is a prime.

It is a super-2 number, since 2×191868659073² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 191868659073.

It is not an unprimeable number, because it can be changed into a prime (191868659083) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3753190 + ... + 3803967.

Almost surely, 2^191868659073 is an apocalyptic number.

191868659073 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

191868659073 is a deficient number, since it is larger than the sum of its proper divisors (160234446463).

191868659073 is a wasteful number, since it uses less digits than its factorization.

191868659073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7557214 (or 7557211 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 63.

The spelling of 191868659073 in words is "one hundred ninety-one billion, eight hundred sixty-eight million, six hundred fifty-nine thousand, seventy-three".