634942453 has 2 divisors, whose sum is σ = 634942454. Its totient is φ = 634942452.

The previous prime is 634942369. The next prime is 634942463. The reversal of 634942453 is 354249436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 634939204 + 3249 = 25198^2 + 57^2 .

It is a cyclic number.

It is not a de Polignac number, because 634942453 - 2²⁹ = 98071541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634942463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317471226 + 317471227.

It is an arithmetic number, because the mean of its divisors is an integer number (317471227).

Almost surely, 2^634942453 is an apocalyptic number.

It is an amenable number.

634942453 is a deficient number, since it is larger than the sum of its proper divisors (1).

634942453 is an equidigital number, since it uses as much as digits as its factorization.

634942453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 40.

The square root of 634942453 is about 25198.0644693199. The cubic root of 634942453 is about 859.4978378115.

The spelling of 634942453 in words is "six hundred thirty-four million, nine hundred forty-two thousand, four hundred fifty-three".