189503764 has 6 divisors (see below), whose sum is σ = 331631594. Its totient is φ = 94751880.

The previous prime is 189503761. The next prime is 189503767. The reversal of 189503764 is 467305981.

It is an interprime number because it is at equal distance from previous prime (189503761) and next prime (189503767).

It can be written as a sum of positive squares in only one way, i.e., 144720900 + 44782864 = 12030^2 + 6692^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 189503764.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189503761) 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, 23687967 + ... + 23687974.

Almost surely, 2^189503764 is an apocalyptic number.

It is an amenable number.

189503764 is a deficient number, since it is larger than the sum of its proper divisors (142127830).

189503764 is a wasteful number, since it uses less digits than its factorization.

189503764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47375945 (or 47375943 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 189503764 is about 13766.0366118938. The cubic root of 189503764 is about 574.3887786091.

The spelling of 189503764 in words is "one hundred eighty-nine million, five hundred three thousand, seven hundred sixty-four".