100785493 has 2 divisors, whose sum is σ = 100785494. Its totient is φ = 100785492.

The previous prime is 100785463. The next prime is 100785499. The reversal of 100785493 is 394587001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99860049 + 925444 = 9993^2 + 962^2 .

It is a cyclic number.

It is not a de Polignac number, because 100785493 - 2¹³ = 100777301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100785499) 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, 50392746 + 50392747.

It is an arithmetic number, because the mean of its divisors is an integer number (50392747).

Almost surely, 2^100785493 is an apocalyptic number.

It is an amenable number.

100785493 is a deficient number, since it is larger than the sum of its proper divisors (1).

100785493 is an equidigital number, since it uses as much as digits as its factorization.

100785493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 100785493 is about 10039.1978265198. The cubic root of 100785493 is about 465.3710269578.

The spelling of 100785493 in words is "one hundred million, seven hundred eighty-five thousand, four hundred ninety-three".