189780006 has 16 divisors (see below), whose sum is σ = 408757104. Its totient is φ = 58393824.

The previous prime is 189780001. The next prime is 189780023. The reversal of 189780006 is 600087981.

189780006 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189780001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1216461 + ... + 1216616.

It is an arithmetic number, because the mean of its divisors is an integer number (25547319).

Almost surely, 2^189780006 is an apocalyptic number.

189780006 is an abundant number, since it is smaller than the sum of its proper divisors (218977098).

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

189780006 is a wasteful number, since it uses less digits than its factorization.

189780006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2433095.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 189780006 is about 13776.0664197005. The cubic root of 189780006 is about 574.6677409991.

The spelling of 189780006 in words is "one hundred eighty-nine million, seven hundred eighty thousand, six".