189040641 has 8 divisors (see below), whose sum is σ = 253101024. Its totient is φ = 125503680.

The previous prime is 189040639. The next prime is 189040651. The reversal of 189040641 is 146040981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 189040641 - 2¹ = 189040639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189040651) 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, 130011 + ... + 131456.

It is an arithmetic number, because the mean of its divisors is an integer number (31637628).

Almost surely, 2^189040641 is an apocalyptic number.

It is an amenable number.

189040641 is a deficient number, since it is larger than the sum of its proper divisors (64060383).

189040641 is a wasteful number, since it uses less digits than its factorization.

189040641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261711.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 189040641 is about 13749.2051042960. The cubic root of 189040641 is about 573.9204859769.

The spelling of 189040641 in words is "one hundred eighty-nine million, forty thousand, six hundred forty-one".