189051040 has 36 divisors (see below), whose sum is σ = 447044346. Its totient is φ = 75550848.

The previous prime is 189051013. The next prime is 189051043. The reversal of 189051040 is 40150981.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 170145936 + 18905104 = 13044^2 + 4348^2 .

It is not an unprimeable number, because it can be changed into a prime (189051043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 173377 + ... + 174463.

Almost surely, 2^189051040 is an apocalyptic number.

189051040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189051040 is an abundant number, since it is smaller than the sum of its proper divisors (257993306).

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

189051040 is an frugal number, since it uses more digits than its factorization.

189051040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189 (or 1094 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 189051040 is about 13749.5832664121. The cubic root of 189051040 is about 573.9310094454.

Multiplying 189051040 by its product of nonzero digits (1440), we get a square (272233497600 = 521760²).

The spelling of 189051040 in words is "one hundred eighty-nine million, fifty-one thousand, forty".