189777199105 has 32 divisors (see below), whose sum is σ = 251068156416. Its totient is φ = 136821775104.

The previous prime is 189777199099. The next prime is 189777199147. The reversal of 189777199105 is 501991777981.

It is a cyclic number.

It is not a de Polignac number, because 189777199105 - 2¹³ = 189777190913 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6646239 + ... + 6674731.

It is an arithmetic number, because the mean of its divisors is an integer number (7845879888).

Almost surely, 2^189777199105 is an apocalyptic number.

It is an amenable number.

189777199105 is a deficient number, since it is larger than the sum of its proper divisors (61290957311).

189777199105 is a wasteful number, since it uses less digits than its factorization.

189777199105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30937.

The product of its (nonzero) digits is 10001880, while the sum is 64.

The spelling of 189777199105 in words is "one hundred eighty-nine billion, seven hundred seventy-seven million, one hundred ninety-nine thousand, one hundred five".