189170064 has 90 divisors (see below), whose sum is σ = 545372646. Its totient is φ = 61175040.

The previous prime is 189170053. The next prime is 189170081. The reversal of 189170064 is 460071981.

It can be written as a sum of positive squares in only one way, i.e., 115347600 + 73822464 = 10740^2 + 8592^2 .

It is a super-2 number, since 2×189170064² = 71570626227528192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1056727 + ... + 1056905.

Almost surely, 2^189170064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189170064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272686323).

189170064 is an abundant number, since it is smaller than the sum of its proper divisors (356202582).

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

189170064 is a wasteful number, since it uses less digits than its factorization.

189170064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 189170064 is about 13753.9108620058. The cubic root of 189170064 is about 574.0514305999.

The spelling of 189170064 in words is "one hundred eighty-nine million, one hundred seventy thousand, sixty-four".