189362491 has 2 divisors, whose sum is σ = 189362492. Its totient is φ = 189362490.

The previous prime is 189362471. The next prime is 189362521. The reversal of 189362491 is 194263981.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 189362491 - 2¹¹ = 189360443 is a prime.

It is not a weakly prime, because it can be changed into another prime (189362471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94681245 + 94681246.

It is an arithmetic number, because the mean of its divisors is an integer number (94681246).

Almost surely, 2^189362491 is an apocalyptic number.

189362491 is a deficient number, since it is larger than the sum of its proper divisors (1).

189362491 is an equidigital number, since it uses as much as digits as its factorization.

189362491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 43.

The square root of 189362491 is about 13760.9044397525. The cubic root of 189362491 is about 574.2460095914.

The spelling of 189362491 in words is "one hundred eighty-nine million, three hundred sixty-two thousand, four hundred ninety-one".