189551948 has 12 divisors (see below), whose sum is σ = 333634560. Its totient is φ = 94227792.

The previous prime is 189551939. The next prime is 189551951. The reversal of 189551948 is 849155981.

It is a junction number, because it is equal to n+sod(n) for n = 189551896 and 189551905.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 136268 + ... + 137651.

It is an arithmetic number, because the mean of its divisors is an integer number (27802880).

Almost surely, 2^189551948 is an apocalyptic number.

It is an amenable number.

189551948 is a deficient number, since it is larger than the sum of its proper divisors (144082612).

189551948 is a wasteful number, since it uses less digits than its factorization.

189551948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274096 (or 274094 counting only the distinct ones).

The product of its digits is 518400, while the sum is 50.

The square root of 189551948 is about 13767.7866049703. The cubic root of 189551948 is about 574.4374566282.

The spelling of 189551948 in words is "one hundred eighty-nine million, five hundred fifty-one thousand, nine hundred forty-eight".