1455814189 has 2 divisors, whose sum is σ = 1455814190. Its totient is φ = 1455814188.

The previous prime is 1455814169. The next prime is 1455814223. The reversal of 1455814189 is 9814185541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1079648164 + 376166025 = 32858^2 + 19395^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1455814189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1455814109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 727907094 + 727907095.

It is an arithmetic number, because the mean of its divisors is an integer number (727907095).

Almost surely, 2^1455814189 is an apocalyptic number.

It is an amenable number.

1455814189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1455814189 is an equidigital number, since it uses as much as digits as its factorization.

1455814189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 230400, while the sum is 46.

The square root of 1455814189 is about 38155.1331933201. The cubic root of 1455814189 is about 1133.3620052627.

The spelling of 1455814189 in words is "one billion, four hundred fifty-five million, eight hundred fourteen thousand, one hundred eighty-nine".