189874072357 has 2 divisors, whose sum is σ = 189874072358. Its totient is φ = 189874072356.

The previous prime is 189874072307. The next prime is 189874072363. The reversal of 189874072357 is 753270478981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176172433441 + 13701638916 = 419729^2 + 117054^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189874072357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 189874072295 and 189874072304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189874072307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94937036178 + 94937036179.

It is an arithmetic number, because the mean of its divisors is an integer number (94937036179).

Almost surely, 2^189874072357 is an apocalyptic number.

It is an amenable number.

189874072357 is a deficient number, since it is larger than the sum of its proper divisors (1).

189874072357 is an equidigital number, since it uses as much as digits as its factorization.

189874072357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23708160, while the sum is 61.

The spelling of 189874072357 in words is "one hundred eighty-nine billion, eight hundred seventy-four million, seventy-two thousand, three hundred fifty-seven".