1055449189 has 2 divisors, whose sum is σ = 1055449190. Its totient is φ = 1055449188.

The previous prime is 1055449169. The next prime is 1055449201. The reversal of 1055449189 is 9819445501.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 536292964 + 519156225 = 23158^2 + 22785^2 .

It is a cyclic number.

It is not a de Polignac number, because 1055449189 - 2⁹ = 1055448677 is a prime.

It is a super-2 number, since 2×1055449189² = 2227945981121515442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1055449169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527724594 + 527724595.

It is an arithmetic number, because the mean of its divisors is an integer number (527724595).

Almost surely, 2^1055449189 is an apocalyptic number.

It is an amenable number.

1055449189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1055449189 is an equidigital number, since it uses as much as digits as its factorization.

1055449189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 46.

The square root of 1055449189 is about 32487.6774947056. The cubic root of 1055449189 is about 1018.1515892770.

The spelling of 1055449189 in words is "one billion, fifty-five million, four hundred forty-nine thousand, one hundred eighty-nine".