1145973149 has 2 divisors, whose sum is σ = 1145973150. Its totient is φ = 1145973148.

The previous prime is 1145973119. The next prime is 1145973173. The reversal of 1145973149 is 9413795411.

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., 815388025 + 330585124 = 28555^2 + 18182^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145973149 - 2¹² = 1145969053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145973109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572986574 + 572986575.

It is an arithmetic number, because the mean of its divisors is an integer number (572986575).

Almost surely, 2^1145973149 is an apocalyptic number.

It is an amenable number.

1145973149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145973149 is an equidigital number, since it uses as much as digits as its factorization.

1145973149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 44.

The square root of 1145973149 is about 33852.2251705852. The cubic root of 1145973149 is about 1046.4652564678.

The spelling of 1145973149 in words is "one billion, one hundred forty-five million, nine hundred seventy-three thousand, one hundred forty-nine".