189907934453 has 2 divisors, whose sum is σ = 189907934454. Its totient is φ = 189907934452.

The previous prime is 189907934443. The next prime is 189907934519. The reversal of 189907934453 is 354439709981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127236316804 + 62671617649 = 356702^2 + 250343^2 .

It is a cyclic number.

It is not a de Polignac number, because 189907934453 - 2¹² = 189907930357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189907934423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94953967226 + 94953967227.

It is an arithmetic number, because the mean of its divisors is an integer number (94953967227).

Almost surely, 2^189907934453 is an apocalyptic number.

It is an amenable number.

189907934453 is a deficient number, since it is larger than the sum of its proper divisors (1).

189907934453 is an equidigital number, since it uses as much as digits as its factorization.

189907934453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29393280, while the sum is 62.

The spelling of 189907934453 in words is "one hundred eighty-nine billion, nine hundred seven million, nine hundred thirty-four thousand, four hundred fifty-three".