189734519902 has 16 divisors (see below), whose sum is σ = 290346237072. Its totient is φ = 92967114240.

The previous prime is 189734519899. The next prime is 189734519927. The reversal of 189734519902 is 209915437981.

It is a congruent number.

It is an unprimeable number.

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, 3642349 + ... + 3694072.

It is an arithmetic number, because the mean of its divisors is an integer number (18146639817).

Almost surely, 2^189734519902 is an apocalyptic number.

189734519902 is a deficient number, since it is larger than the sum of its proper divisors (100611717170).

189734519902 is a wasteful number, since it uses less digits than its factorization.

189734519902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7336683.

The product of its (nonzero) digits is 4898880, while the sum is 58.

The spelling of 189734519902 in words is "one hundred eighty-nine billion, seven hundred thirty-four million, five hundred nineteen thousand, nine hundred two".