189661502 has 4 divisors (see below), whose sum is σ = 284492256. Its totient is φ = 94830750.

The previous prime is 189661501. The next prime is 189661513. The reversal of 189661502 is 205166981.

189661502 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 205166981 = 113 ⋅1815637.

It is a super-3 number, since 3×189661502³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189661501) 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, 47415374 + ... + 47415377.

It is an arithmetic number, because the mean of its divisors is an integer number (71123064).

Almost surely, 2^189661502 is an apocalyptic number.

189661502 is a deficient number, since it is larger than the sum of its proper divisors (94830754).

189661502 is an equidigital number, since it uses as much as digits as its factorization.

189661502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94830753.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 189661502 is about 13771.7646654305. The cubic root of 189661502 is about 574.5481031670.

The spelling of 189661502 in words is "one hundred eighty-nine million, six hundred sixty-one thousand, five hundred two".