146945021393 has 2 divisors, whose sum is σ = 146945021394. Its totient is φ = 146945021392.

The previous prime is 146945021359. The next prime is 146945021417. The reversal of 146945021393 is 393120549641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126855644224 + 20089377169 = 356168^2 + 141737^2 .

It is a cyclic number.

It is not a de Polignac number, because 146945021393 - 2⁸ = 146945021137 is a prime.

It is not a weakly prime, because it can be changed into another prime (146945021303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73472510696 + 73472510697.

It is an arithmetic number, because the mean of its divisors is an integer number (73472510697).

Almost surely, 2^146945021393 is an apocalyptic number.

It is an amenable number.

146945021393 is a deficient number, since it is larger than the sum of its proper divisors (1).

146945021393 is an equidigital number, since it uses as much as digits as its factorization.

146945021393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 47.

The spelling of 146945021393 in words is "one hundred forty-six billion, nine hundred forty-five million, twenty-one thousand, three hundred ninety-three".