146978093 has 2 divisors, whose sum is σ = 146978094. Its totient is φ = 146978092.

The previous prime is 146978081. The next prime is 146978113. The reversal of 146978093 is 390879641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80604484 + 66373609 = 8978^2 + 8147^2 .

It is a cyclic number.

It is not a de Polignac number, because 146978093 - 2⁸ = 146977837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146938093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73489046 + 73489047.

It is an arithmetic number, because the mean of its divisors is an integer number (73489047).

Almost surely, 2^146978093 is an apocalyptic number.

It is an amenable number.

146978093 is a deficient number, since it is larger than the sum of its proper divisors (1).

146978093 is an equidigital number, since it uses as much as digits as its factorization.

146978093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 146978093 is about 12123.4521898674. The cubic root of 146978093 is about 527.7369904616.

The spelling of 146978093 in words is "one hundred forty-six million, nine hundred seventy-eight thousand, ninety-three".