1634663253 has 8 divisors (see below), whose sum is σ = 2212081888. Its totient is φ = 1073510064.

The previous prime is 1634663249. The next prime is 1634663257. The reversal of 1634663253 is 3523664361.

It is an interprime number because it is at equal distance from previous prime (1634663249) and next prime (1634663257).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1634663253 - 2² = 1634663249 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1634663257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4066126 + ... + 4066527.

It is an arithmetic number, because the mean of its divisors is an integer number (276510236).

Almost surely, 2^1634663253 is an apocalyptic number.

It is an amenable number.

1634663253 is a deficient number, since it is larger than the sum of its proper divisors (577418635).

1634663253 is an equidigital number, since it uses as much as digits as its factorization.

1634663253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8132723.

The product of its digits is 233280, while the sum is 39.

The square root of 1634663253 is about 40430.9689841834. The cubic root of 1634663253 is about 1177.9931542614.

The spelling of 1634663253 in words is "one billion, six hundred thirty-four million, six hundred sixty-three thousand, two hundred fifty-three".