191400446934 has 32 divisors (see below), whose sum is σ = 428581169280. Its totient is φ = 63313122600.

The previous prime is 191400446921. The next prime is 191400446947. The reversal of 191400446934 is 439644004191.

191400446934 is a `hidden beast` number, since 19 + 140 + 0 + 4 + 469 + 34 = 666.

It is an interprime number because it is at equal distance from previous prime (191400446921) and next prime (191400446947).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 191400446934.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13521372 + ... + 13535519.

It is an arithmetic number, because the mean of its divisors is an integer number (13393161540).

Almost surely, 2^191400446934 is an apocalyptic number.

191400446934 is an abundant number, since it is smaller than the sum of its proper divisors (237180722346).

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

191400446934 is a wasteful number, since it uses less digits than its factorization.

191400446934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27057033 (or 27057027 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 191400446934 in words is "one hundred ninety-one billion, four hundred million, four hundred forty-six thousand, nine hundred thirty-four".