146756381 has 2 divisors, whose sum is σ = 146756382. Its totient is φ = 146756380.

The previous prime is 146756371. The next prime is 146756431. The reversal of 146756381 is 183657641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135932281 + 10824100 = 11659^2 + 3290^2 .

It is a cyclic number.

It is not a de Polignac number, because 146756381 - 2⁶ = 146756317 is a prime.

It is a super-4 number, since 4×146756381⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146756341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73378190 + 73378191.

It is an arithmetic number, because the mean of its divisors is an integer number (73378191).

Almost surely, 2^146756381 is an apocalyptic number.

It is an amenable number.

146756381 is a deficient number, since it is larger than the sum of its proper divisors (1).

146756381 is an equidigital number, since it uses as much as digits as its factorization.

146756381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 146756381 is about 12114.3048087788. The cubic root of 146756381 is about 527.4714985012.

The spelling of 146756381 in words is "one hundred forty-six million, seven hundred fifty-six thousand, three hundred eighty-one".