1634729153 has 4 divisors (see below), whose sum is σ = 1678911060. Its totient is φ = 1590547248.

The previous prime is 1634729149. The next prime is 1634729167. The reversal of 1634729153 is 3519274361.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1071711169 + 563017984 = 32737^2 + 23728^2 .

It is a cyclic number.

It is not a de Polignac number, because 1634729153 - 2² = 1634729149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1634729153.

It is not an unprimeable number, because it can be changed into a prime (1634729113) 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, 22090898 + ... + 22090971.

It is an arithmetic number, because the mean of its divisors is an integer number (419727765).

Almost surely, 2^1634729153 is an apocalyptic number.

It is an amenable number.

1634729153 is a deficient number, since it is larger than the sum of its proper divisors (44181907).

1634729153 is an equidigital number, since it uses as much as digits as its factorization.

1634729153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44181906.

The product of its digits is 136080, while the sum is 41.

The square root of 1634729153 is about 40431.7839453072. The cubic root of 1634729153 is about 1178.0089839653.

The spelling of 1634729153 in words is "one billion, six hundred thirty-four million, seven hundred twenty-nine thousand, one hundred fifty-three".