1027173149 has 2 divisors, whose sum is σ = 1027173150. Its totient is φ = 1027173148.

The previous prime is 1027173139. The next prime is 1027173209. The reversal of 1027173149 is 9413717201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 945993049 + 81180100 = 30757^2 + 9010^2 .

It is a cyclic number.

It is not a de Polignac number, because 1027173149 - 2²⁴ = 1010395933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1027173139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 513586574 + 513586575.

It is an arithmetic number, because the mean of its divisors is an integer number (513586575).

Almost surely, 2^1027173149 is an apocalyptic number.

It is an amenable number.

1027173149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1027173149 is an equidigital number, since it uses as much as digits as its factorization.

1027173149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 1027173149 is about 32049.5421028133. The cubic root of 1027173149 is about 1008.9768906349.

The spelling of 1027173149 in words is "one billion, twenty-seven million, one hundred seventy-three thousand, one hundred forty-nine".