146812009 has 2 divisors, whose sum is σ = 146812010. Its totient is φ = 146812008.

The previous prime is 146811953. The next prime is 146812027. The reversal of 146812009 is 900218641.

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., 128936025 + 17875984 = 11355^2 + 4228^2 .

It is a cyclic number.

It is not a de Polignac number, because 146812009 - 2¹¹ = 146809961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (146812049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73406004 + 73406005.

It is an arithmetic number, because the mean of its divisors is an integer number (73406005).

Almost surely, 2^146812009 is an apocalyptic number.

It is an amenable number.

146812009 is a deficient number, since it is larger than the sum of its proper divisors (1).

146812009 is an equidigital number, since it uses as much as digits as its factorization.

146812009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 146812009 is about 12116.6005546110. The cubic root of 146812009 is about 527.5381360987.

The spelling of 146812009 in words is "one hundred forty-six million, eight hundred twelve thousand, nine".