328691453 has 2 divisors, whose sum is σ = 328691454. Its totient is φ = 328691452.

The previous prime is 328691449. The next prime is 328691477. The reversal of 328691453 is 354196823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 249071524 + 79619929 = 15782^2 + 8923^2 .

It is an emirp because it is prime and its reverse (354196823) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 328691453 - 2² = 328691449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 328691453.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328691443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164345726 + 164345727.

It is an arithmetic number, because the mean of its divisors is an integer number (164345727).

Almost surely, 2^328691453 is an apocalyptic number.

It is an amenable number.

328691453 is a deficient number, since it is larger than the sum of its proper divisors (1).

328691453 is an equidigital number, since it uses as much as digits as its factorization.

328691453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 41.

The square root of 328691453 is about 18129.8497787489. The cubic root of 328691453 is about 690.1277177291.

The spelling of 328691453 in words is "three hundred twenty-eight million, six hundred ninety-one thousand, four hundred fifty-three".