146885993 has 2 divisors, whose sum is σ = 146885994. Its totient is φ = 146885992.

The previous prime is 146885989. The next prime is 146886031. The reversal of 146885993 is 399588641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140469904 + 6416089 = 11852^2 + 2533^2 .

It is a cyclic number.

It is not a de Polignac number, because 146885993 - 2² = 146885989 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (146885923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73442996 + 73442997.

It is an arithmetic number, because the mean of its divisors is an integer number (73442997).

Almost surely, 2^146885993 is an apocalyptic number.

It is an amenable number.

146885993 is a deficient number, since it is larger than the sum of its proper divisors (1).

146885993 is an equidigital number, since it uses as much as digits as its factorization.

146885993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 53.

The square root of 146885993 is about 12119.6531716052. The cubic root of 146885993 is about 527.6267365418.

The spelling of 146885993 in words is "one hundred forty-six million, eight hundred eighty-five thousand, nine hundred ninety-three".