189569616 has 20 divisors (see below), whose sum is σ = 489721632. Its totient is φ = 63189856.

The previous prime is 189569603. The next prime is 189569683. The reversal of 189569616 is 616965981.

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, 1974636 + ... + 1974731.

Almost surely, 2^189569616 is an apocalyptic number.

189569616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

189569616 is an abundant number, since it is smaller than the sum of its proper divisors (300152016).

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

189569616 is a wasteful number, since it uses less digits than its factorization.

189569616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3949378 (or 3949372 counting only the distinct ones).

The product of its digits is 699840, while the sum is 51.

The square root of 189569616 is about 13768.4282327359. The cubic root of 189569616 is about 574.4553037070.

The spelling of 189569616 in words is "one hundred eighty-nine million, five hundred sixty-nine thousand, six hundred sixteen".