1353631634 has 4 divisors (see below), whose sum is σ = 2030447454. Its totient is φ = 676815816.

The previous prime is 1353631603. The next prime is 1353631679. The reversal of 1353631634 is 4361363531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 808549225 + 545082409 = 28435^2 + 23347^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1353631594 and 1353631603.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338407907 + ... + 338407910.

Almost surely, 2^1353631634 is an apocalyptic number.

1353631634 is a deficient number, since it is larger than the sum of its proper divisors (676815820).

1353631634 is an equidigital number, since it uses as much as digits as its factorization.

1353631634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676815819.

The product of its digits is 58320, while the sum is 35.

The square root of 1353631634 is about 36791.7332290829. The cubic root of 1353631634 is about 1106.1996032922.

The spelling of 1353631634 in words is "one billion, three hundred fifty-three million, six hundred thirty-one thousand, six hundred thirty-four".