189867734 has 8 divisors (see below), whose sum is σ = 325487568. Its totient is φ = 81371880.

The previous prime is 189867719. The next prime is 189867751. The reversal of 189867734 is 437768981.

189867734 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

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, 6780977 + ... + 6781004.

It is an arithmetic number, because the mean of its divisors is an integer number (40685946).

Almost surely, 2^189867734 is an apocalyptic number.

189867734 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

189867734 is a deficient number, since it is larger than the sum of its proper divisors (135619834).

189867734 is a wasteful number, since it uses less digits than its factorization.

189867734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13561990.

The product of its digits is 2032128, while the sum is 53.

The square root of 189867734 is about 13779.2501247347. The cubic root of 189867734 is about 574.7562762922.

The spelling of 189867734 in words is "one hundred eighty-nine million, eight hundred sixty-seven thousand, seven hundred thirty-four".