146940681409 has 2 divisors, whose sum is σ = 146940681410. Its totient is φ = 146940681408.

The previous prime is 146940681403. The next prime is 146940681451. The reversal of 146940681409 is 904186049641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113478028225 + 33462653184 = 336865^2 + 182928^2 .

It is a cyclic number.

It is not a de Polignac number, because 146940681409 - 2³ = 146940681401 is a prime.

It is not a weakly prime, because it can be changed into another prime (146940681401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73470340704 + 73470340705.

It is an arithmetic number, because the mean of its divisors is an integer number (73470340705).

Almost surely, 2^146940681409 is an apocalyptic number.

It is an amenable number.

146940681409 is a deficient number, since it is larger than the sum of its proper divisors (1).

146940681409 is an equidigital number, since it uses as much as digits as its factorization.

146940681409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1492992, while the sum is 52.

The spelling of 146940681409 in words is "one hundred forty-six billion, nine hundred forty million, six hundred eighty-one thousand, four hundred nine".