418672993 has 2 divisors, whose sum is σ = 418672994. Its totient is φ = 418672992.

The previous prime is 418672973. The next prime is 418673041. The reversal of 418672993 is 399276814.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 396328464 + 22344529 = 19908^2 + 4727^2 .

It is a cyclic number.

It is not a de Polignac number, because 418672993 - 2¹³ = 418664801 is a prime.

It is not a weakly prime, because it can be changed into another prime (418672973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209336496 + 209336497.

It is an arithmetic number, because the mean of its divisors is an integer number (209336497).

Almost surely, 2^418672993 is an apocalyptic number.

It is an amenable number.

418672993 is a deficient number, since it is larger than the sum of its proper divisors (1).

418672993 is an equidigital number, since it uses as much as digits as its factorization.

418672993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 49.

The square root of 418672993 is about 20461.5002626885. The cubic root of 418672993 is about 748.0976934227.

The spelling of 418672993 in words is "four hundred eighteen million, six hundred seventy-two thousand, nine hundred ninety-three".