189711999069 has 16 divisors (see below), whose sum is σ = 269873208000. Its totient is φ = 118126311680.

The previous prime is 189711999047. The next prime is 189711999073. The reversal of 189711999069 is 960999117981.

It is a cyclic number.

It is not a de Polignac number, because 189711999069 - 2¹² = 189711994973 is a prime.

It is a super-2 number, since 2×189711999069² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 189711998994 and 189711999012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189711999079) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14191194 + ... + 14204555.

It is an arithmetic number, because the mean of its divisors is an integer number (16867075500).

Almost surely, 2^189711999069 is an apocalyptic number.

It is an amenable number.

189711999069 is a deficient number, since it is larger than the sum of its proper divisors (80161208931).

189711999069 is a wasteful number, since it uses less digits than its factorization.

189711999069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28395900.

The product of its (nonzero) digits is 19840464, while the sum is 69.

The spelling of 189711999069 in words is "one hundred eighty-nine billion, seven hundred eleven million, nine hundred ninety-nine thousand, sixty-nine".