189103451 has 2 divisors, whose sum is σ = 189103452. Its totient is φ = 189103450.

The previous prime is 189103433. The next prime is 189103463. The reversal of 189103451 is 154301981.

It is a strong prime.

It is an emirp because it is prime and its reverse (154301981) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189103451 is a prime.

It is not a weakly prime, because it can be changed into another prime (189103951) 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, 94551725 + 94551726.

It is an arithmetic number, because the mean of its divisors is an integer number (94551726).

Almost surely, 2^189103451 is an apocalyptic number.

189103451 is a deficient number, since it is larger than the sum of its proper divisors (1).

189103451 is an equidigital number, since it uses as much as digits as its factorization.

189103451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 189103451 is about 13751.4890466451. The cubic root of 189103451 is about 573.9840418943.

The spelling of 189103451 in words is "one hundred eighty-nine million, one hundred three thousand, four hundred fifty-one".