146541869 has 2 divisors, whose sum is σ = 146541870. Its totient is φ = 146541868.

The previous prime is 146541859. The next prime is 146541881. The reversal of 146541869 is 968145641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97022500 + 49519369 = 9850^2 + 7037^2 .

It is an emirp because it is prime and its reverse (968145641) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146541869 is a prime.

It is a super-2 number, since 2×146541869² = 42949038740026322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146541839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73270934 + 73270935.

It is an arithmetic number, because the mean of its divisors is an integer number (73270935).

Almost surely, 2^146541869 is an apocalyptic number.

It is an amenable number.

146541869 is a deficient number, since it is larger than the sum of its proper divisors (1).

146541869 is an equidigital number, since it uses as much as digits as its factorization.

146541869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 44.

The square root of 146541869 is about 12105.4479057984. The cubic root of 146541869 is about 527.2143736444.

It can be divided in two parts, 1465 and 41869, that added together give a palindrome (43334).

The spelling of 146541869 in words is "one hundred forty-six million, five hundred forty-one thousand, eight hundred sixty-nine".