189846545 has 32 divisors (see below), whose sum is σ = 265959936. Its totient is φ = 127411200.

The previous prime is 189846541. The next prime is 189846563. The reversal of 189846545 is 545648981.

It is not a de Polignac number, because 189846545 - 2² = 189846541 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 189846493 and 189846502.

It is not an unprimeable number, because it can be changed into a prime (189846541) 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 in 31 ways as a sum of consecutive naturals, for example, 598727 + ... + 599043.

It is an arithmetic number, because the mean of its divisors is an integer number (8311248).

Almost surely, 2^189846545 is an apocalyptic number.

It is an amenable number.

189846545 is a deficient number, since it is larger than the sum of its proper divisors (76113391).

189846545 is a wasteful number, since it uses less digits than its factorization.

189846545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641.

The product of its digits is 1382400, while the sum is 50.

The square root of 189846545 is about 13778.4812298018. The cubic root of 189846545 is about 574.7348948046.

The spelling of 189846545 in words is "one hundred eighty-nine million, eight hundred forty-six thousand, five hundred forty-five".