1146155509 has 2 divisors, whose sum is σ = 1146155510. Its totient is φ = 1146155508.

The previous prime is 1146155501. The next prime is 1146155513. The reversal of 1146155509 is 9055516411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 762974884 + 383180625 = 27622^2 + 19575^2 .

It is a cyclic number.

It is not a de Polignac number, because 1146155509 - 2³ = 1146155501 is a prime.

It is a super-2 number, since 2×1146155509² = 2627344901622098162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1146155501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 573077754 + 573077755.

It is an arithmetic number, because the mean of its divisors is an integer number (573077755).

Almost surely, 2^1146155509 is an apocalyptic number.

It is an amenable number.

1146155509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1146155509 is an equidigital number, since it uses as much as digits as its factorization.

1146155509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27000, while the sum is 37.

The square root of 1146155509 is about 33854.9185348304. The cubic root of 1146155509 is about 1046.5207619226.

The spelling of 1146155509 in words is "one billion, one hundred forty-six million, one hundred fifty-five thousand, five hundred nine".