189431552 has 18 divisors (see below), whose sum is σ = 378123648. Its totient is φ = 94715648.

The previous prime is 189431551. The next prime is 189431659. The reversal of 189431552 is 255134981.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189431551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 369728 + ... + 370239.

Almost surely, 2^189431552 is an apocalyptic number.

It is an amenable number.

189431552 is a deficient number, since it is larger than the sum of its proper divisors (188692096).

189431552 is an frugal number, since it uses more digits than its factorization.

189431552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739983 (or 739969 counting only the distinct ones).

The product of its digits is 43200, while the sum is 38.

The square root of 189431552 is about 13763.4135300804. The cubic root of 189431552 is about 574.3158107847.

The spelling of 189431552 in words is "one hundred eighty-nine million, four hundred thirty-one thousand, five hundred fifty-two".