1630326353 has 4 divisors (see below), whose sum is σ = 1653288768. Its totient is φ = 1607363940.

The previous prime is 1630326329. The next prime is 1630326359. The reversal of 1630326353 is 3536230361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3536230361 = 41 ⋅86249521.

It is a cyclic number.

It is not a de Polignac number, because 1630326353 - 2⁸ = 1630326097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1630326359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11481101 + ... + 11481242.

It is an arithmetic number, because the mean of its divisors is an integer number (413322192).

Almost surely, 2^1630326353 is an apocalyptic number.

It is an amenable number.

1630326353 is a deficient number, since it is larger than the sum of its proper divisors (22962415).

1630326353 is an equidigital number, since it uses as much as digits as its factorization.

1630326353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22962414.

The product of its (nonzero) digits is 29160, while the sum is 32.

The square root of 1630326353 is about 40377.2999716425. The cubic root of 1630326353 is about 1176.9504597426.

The spelling of 1630326353 in words is "one billion, six hundred thirty million, three hundred twenty-six thousand, three hundred fifty-three".