918354403 has 2 divisors, whose sum is σ = 918354404. Its totient is φ = 918354402.

The previous prime is 918354377. The next prime is 918354407. The reversal of 918354403 is 304453819.

It is a strong prime.

It is an emirp because it is prime and its reverse (304453819) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-918354403 is a prime.

It is not a weakly prime, because it can be changed into another prime (918354407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459177201 + 459177202.

It is an arithmetic number, because the mean of its divisors is an integer number (459177202).

Almost surely, 2^918354403 is an apocalyptic number.

918354403 is a deficient number, since it is larger than the sum of its proper divisors (1).

918354403 is an equidigital number, since it uses as much as digits as its factorization.

918354403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 918354403 is about 30304.3627717199. The cubic root of 918354403 is about 972.0085927170.

The spelling of 918354403 in words is "nine hundred eighteen million, three hundred fifty-four thousand, four hundred three".