146463781 has 2 divisors, whose sum is σ = 146463782. Its totient is φ = 146463780.

The previous prime is 146463763. The next prime is 146463803. The reversal of 146463781 is 187364641.

146463781 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., 103022500 + 43441281 = 10150^2 + 6591^2 .

It is a cyclic number.

It is not a de Polignac number, because 146463781 - 2⁵ = 146463749 is a prime.

It is a super-3 number, since 3×146463781³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146463731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73231890 + 73231891.

It is an arithmetic number, because the mean of its divisors is an integer number (73231891).

Almost surely, 2^146463781 is an apocalyptic number.

It is an amenable number.

146463781 is a deficient number, since it is larger than the sum of its proper divisors (1).

146463781 is an equidigital number, since it uses as much as digits as its factorization.

146463781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 40.

The square root of 146463781 is about 12102.2221513241. Note that the first 3 decimals coincide. The cubic root of 146463781 is about 527.1207111503.

The spelling of 146463781 in words is "one hundred forty-six million, four hundred sixty-three thousand, seven hundred eighty-one".