189000070 has 32 divisors (see below), whose sum is σ = 399313728. Its totient is φ = 63047808.

The previous prime is 189000061. The next prime is 189000073. The reversal of 189000070 is 70000981.

189000070 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 188999999 and 189000044.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189000073) 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, 33897 + ... + 39076.

It is an arithmetic number, because the mean of its divisors is an integer number (12478554).

Almost surely, 2^189000070 is an apocalyptic number.

189000070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189000070 is an abundant number, since it is smaller than the sum of its proper divisors (210313658).

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

189000070 is a wasteful number, since it uses less digits than its factorization.

189000070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73024.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 189000070 is about 13747.7296307427. The cubic root of 189000070 is about 573.8794256810.

The spelling of 189000070 in words is "one hundred eighty-nine million, seventy", and thus it is an aban number.