189661248692 has 12 divisors (see below), whose sum is σ = 331938580260. Its totient is φ = 94821654336.

The previous prime is 189661248649. The next prime is 189661248701. The reversal of 189661248692 is 296842166981.

It can be written as a sum of positive squares in 2 ways, for example, as 51399237796 + 138262010896 = 226714^2 + 371836^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2194817 + ... + 2279592.

It is an arithmetic number, because the mean of its divisors is an integer number (27661548355).

Almost surely, 2^189661248692 is an apocalyptic number.

It is an amenable number.

189661248692 is a deficient number, since it is larger than the sum of its proper divisors (142277331568).

189661248692 is a wasteful number, since it uses less digits than its factorization.

189661248692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4485010 (or 4485008 counting only the distinct ones).

The product of its digits is 17915904, while the sum is 62.

The spelling of 189661248692 in words is "one hundred eighty-nine billion, six hundred sixty-one million, two hundred forty-eight thousand, six hundred ninety-two".