1065870149 has 2 divisors, whose sum is σ = 1065870150. Its totient is φ = 1065870148.

The previous prime is 1065870083. The next prime is 1065870173. The reversal of 1065870149 is 9410785601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 889113124 + 176757025 = 29818^2 + 13295^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1065870149 is a prime.

It is a super-2 number, since 2×1065870149² = 2272158349058564402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1065870649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532935074 + 532935075.

It is an arithmetic number, because the mean of its divisors is an integer number (532935075).

Almost surely, 2^1065870149 is an apocalyptic number.

It is an amenable number.

1065870149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1065870149 is an equidigital number, since it uses as much as digits as its factorization.

1065870149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 1065870149 is about 32647.6668232203. Note that the first 3 decimals coincide. The cubic root of 1065870149 is about 1021.4915219436.

The spelling of 1065870149 in words is "one billion, sixty-five million, eight hundred seventy thousand, one hundred forty-nine".