189842441788 has 12 divisors (see below), whose sum is σ = 332231438952. Its totient is φ = 94919173520.

The previous prime is 189842441777. The next prime is 189842441843. The reversal of 189842441788 is 887144248981.

It is a happy 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, 292798 + ... + 682213.

It is an arithmetic number, because the mean of its divisors is an integer number (27685953246).

Almost surely, 2^189842441788 is an apocalyptic number.

It is an amenable number.

189842441788 is a deficient number, since it is larger than the sum of its proper divisors (142388997164).

189842441788 is a wasteful number, since it uses less digits than its factorization.

189842441788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023692 (or 1023690 counting only the distinct ones).

The product of its digits is 33030144, while the sum is 64.

The spelling of 189842441788 in words is "one hundred eighty-nine billion, eight hundred forty-two million, four hundred forty-one thousand, seven hundred eighty-eight".