189400512534 has 8 divisors (see below), whose sum is σ = 378801025080. Its totient is φ = 63133504176.

The previous prime is 189400512517. The next prime is 189400512593. The reversal of 189400512534 is 435215004981.

It is a sphenic number, since it is the product of 3 distinct primes.

189400512534 is an admirable number.

It is a super-2 number, since 2×189400512534² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15783376039 + ... + 15783376050.

It is an arithmetic number, because the mean of its divisors is an integer number (47350128135).

Almost surely, 2^189400512534 is an apocalyptic number.

189400512534 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

189400512534 is a wasteful number, since it uses less digits than its factorization.

189400512534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31566752094.

The product of its (nonzero) digits is 172800, while the sum is 42.

The spelling of 189400512534 in words is "one hundred eighty-nine billion, four hundred million, five hundred twelve thousand, five hundred thirty-four".