189448837 has 2 divisors, whose sum is σ = 189448838. Its totient is φ = 189448836.

The previous prime is 189448813. The next prime is 189448849. The reversal of 189448837 is 738844981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95765796 + 93683041 = 9786^2 + 9679^2 .

It is a cyclic number.

It is not a de Polignac number, because 189448837 - 2⁷ = 189448709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189448807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94724418 + 94724419.

It is an arithmetic number, because the mean of its divisors is an integer number (94724419).

Almost surely, 2^189448837 is an apocalyptic number.

It is an amenable number.

189448837 is a deficient number, since it is larger than the sum of its proper divisors (1).

189448837 is an equidigital number, since it uses as much as digits as its factorization.

189448837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1548288, while the sum is 52.

The square root of 189448837 is about 13764.0414486444. The cubic root of 189448837 is about 574.3332783902. Note that the first 3 decimals are identical.

The spelling of 189448837 in words is "one hundred eighty-nine million, four hundred forty-eight thousand, eight hundred thirty-seven".