918190093 has 2 divisors, whose sum is σ = 918190094. Its totient is φ = 918190092.

The previous prime is 918190087. The next prime is 918190099. The reversal of 918190093 is 390091819.

It is a balanced prime because it is at equal distance from previous prime (918190087) and next prime (918190099).

It can be written as a sum of positive squares in only one way, i.e., 916757284 + 1432809 = 30278^2 + 1197^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-918190093 is a prime.

It is equal to p_46891570 and since 918190093 and 46891570 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (918190099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459095046 + 459095047.

It is an arithmetic number, because the mean of its divisors is an integer number (459095047).

Almost surely, 2^918190093 is an apocalyptic number.

It is an amenable number.

918190093 is a deficient number, since it is larger than the sum of its proper divisors (1).

918190093 is an equidigital number, since it uses as much as digits as its factorization.

918190093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 40.

The square root of 918190093 is about 30301.6516546541. The cubic root of 918190093 is about 971.9506193619.

The spelling of 918190093 in words is "nine hundred eighteen million, one hundred ninety thousand, ninety-three".