189490199527 has 2 divisors, whose sum is σ = 189490199528. Its totient is φ = 189490199526.

The previous prime is 189490199441. The next prime is 189490199539. The reversal of 189490199527 is 725991094981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 189490199527 - 2²⁷ = 189355981799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189490193527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94745099763 + 94745099764.

It is an arithmetic number, because the mean of its divisors is an integer number (94745099764).

Almost surely, 2^189490199527 is an apocalyptic number.

189490199527 is a deficient number, since it is larger than the sum of its proper divisors (1).

189490199527 is an equidigital number, since it uses as much as digits as its factorization.

189490199527 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14696640, while the sum is 64.

It can be divided in two parts, 189490 and 199527, that added together give a cube (389017 = 73³).

The spelling of 189490199527 in words is "one hundred eighty-nine billion, four hundred ninety million, one hundred ninety-nine thousand, five hundred twenty-seven".