146349509 has 2 divisors, whose sum is σ = 146349510. Its totient is φ = 146349508.

The previous prime is 146349503. The next prime is 146349517. The reversal of 146349509 is 905943641.

146349509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146337409 + 12100 = 12097^2 + 110^2 .

It is a cyclic number.

It is not a de Polignac number, because 146349509 - 2²⁴ = 129572293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146349503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73174754 + 73174755.

It is an arithmetic number, because the mean of its divisors is an integer number (73174755).

Almost surely, 2^146349509 is an apocalyptic number.

It is an amenable number.

146349509 is a deficient number, since it is larger than the sum of its proper divisors (1).

146349509 is an equidigital number, since it uses as much as digits as its factorization.

146349509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 146349509 is about 12097.5001136598. The cubic root of 146349509 is about 526.9835878070.

The spelling of 146349509 in words is "one hundred forty-six million, three hundred forty-nine thousand, five hundred nine".