189454410868 has 6 divisors (see below), whose sum is σ = 331545219026. Its totient is φ = 94727205432.

The previous prime is 189454410841. The next prime is 189454410869. The reversal of 189454410868 is 868014454981.

It can be written as a sum of positive squares in only one way, i.e., 125924200164 + 63530210704 = 354858^2 + 252052^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189454410869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23681801355 + ... + 23681801362.

Almost surely, 2^189454410868 is an apocalyptic number.

It is an amenable number.

189454410868 is a deficient number, since it is larger than the sum of its proper divisors (142090808158).

189454410868 is a wasteful number, since it uses less digits than its factorization.

189454410868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47363602721 (or 47363602719 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 58.

The spelling of 189454410868 in words is "one hundred eighty-nine billion, four hundred fifty-four million, four hundred ten thousand, eight hundred sixty-eight".