189047464 has 8 divisors (see below), whose sum is σ = 354464010. Its totient is φ = 94523728.

The previous prime is 189047461. The next prime is 189047477. The reversal of 189047464 is 464740981.

It can be written as a sum of positive squares in only one way, i.e., 181440900 + 7606564 = 13470^2 + 2758^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 189047464.

It is not an unprimeable number, because it can be changed into a prime (189047461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11815459 + ... + 11815474.

Almost surely, 2^189047464 is an apocalyptic number.

It is an amenable number.

189047464 is a deficient number, since it is larger than the sum of its proper divisors (165416546).

189047464 is a wasteful number, since it uses less digits than its factorization.

189047464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23630939 (or 23630935 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 189047464 is about 13749.4532254923. The cubic root of 189047464 is about 573.9273906868.

The spelling of 189047464 in words is "one hundred eighty-nine million, forty-seven thousand, four hundred sixty-four".