146668157 has 2 divisors, whose sum is σ = 146668158. Its totient is φ = 146668156.

The previous prime is 146668139. The next prime is 146668183. The reversal of 146668157 is 751866641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89226916 + 57441241 = 9446^2 + 7579^2 .

It is a cyclic number.

It is not a de Polignac number, because 146668157 - 2¹⁰ = 146667133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146668117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73334078 + 73334079.

It is an arithmetic number, because the mean of its divisors is an integer number (73334079).

Almost surely, 2^146668157 is an apocalyptic number.

It is an amenable number.

146668157 is a deficient number, since it is larger than the sum of its proper divisors (1).

146668157 is an equidigital number, since it uses as much as digits as its factorization.

146668157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 44.

The square root of 146668157 is about 12110.6629463461. The cubic root of 146668157 is about 527.3657791374.

The spelling of 146668157 in words is "one hundred forty-six million, six hundred sixty-eight thousand, one hundred fifty-seven".