34618921 has 2 divisors, whose sum is σ = 34618922. Its totient is φ = 34618920.

The previous prime is 34618901. The next prime is 34618949. The reversal of 34618921 is 12981643.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34574400 + 44521 = 5880^2 + 211^2 .

It is an emirp because it is prime and its reverse (12981643) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34618921 - 2¹¹ = 34616873 is a prime.

It is not a weakly prime, because it can be changed into another prime (34618901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17309460 + 17309461.

It is an arithmetic number, because the mean of its divisors is an integer number (17309461).

Almost surely, 2^34618921 is an apocalyptic number.

It is an amenable number.

34618921 is a deficient number, since it is larger than the sum of its proper divisors (1).

34618921 is an equidigital number, since it uses as much as digits as its factorization.

34618921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 34.

The square root of 34618921 is about 5883.7845813728. The cubic root of 34618921 is about 325.9151202358.

The spelling of 34618921 in words is "thirty-four million, six hundred eighteen thousand, nine hundred twenty-one".