189908948 has 6 divisors (see below), whose sum is σ = 332340666. Its totient is φ = 94954472.

The previous prime is 189908947. The next prime is 189908951. The reversal of 189908948 is 849809981.

It can be written as a sum of positive squares in only one way, i.e., 184470724 + 5438224 = 13582^2 + 2332^2 .

It is a junction number, because it is equal to n+sod(n) for n = 189908893 and 189908902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189908947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23738615 + ... + 23738622.

It is an arithmetic number, because the mean of its divisors is an integer number (55390111).

Almost surely, 2^189908948 is an apocalyptic number.

It is an amenable number.

189908948 is a deficient number, since it is larger than the sum of its proper divisors (142431718).

189908948 is a wasteful number, since it uses less digits than its factorization.

189908948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47477241 (or 47477239 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 56.

The square root of 189908948 is about 13780.7455531259. The cubic root of 189908948 is about 574.7978601375.

The spelling of 189908948 in words is "one hundred eighty-nine million, nine hundred eight thousand, nine hundred forty-eight".