189551406734 has 16 divisors (see below), whose sum is σ = 284715658368. Its totient is φ = 94646234592.

The previous prime is 189551406731. The next prime is 189551406809. The reversal of 189551406734 is 437604155981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189551406731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11930804 + ... + 11946680.

It is an arithmetic number, because the mean of its divisors is an integer number (17794728648).

Almost surely, 2^189551406734 is an apocalyptic number.

189551406734 is a deficient number, since it is larger than the sum of its proper divisors (95164251634).

189551406734 is a wasteful number, since it uses less digits than its factorization.

189551406734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23659.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 189551406734 in words is "one hundred eighty-nine billion, five hundred fifty-one million, four hundred six thousand, seven hundred thirty-four".