1631888053 has 4 divisors (see below), whose sum is σ = 1636564300. Its totient is φ = 1627211808.

The previous prime is 1631888039. The next prime is 1631888057. The reversal of 1631888053 is 3508881361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3508881361 = 29 ⋅120995909.

It can be written as a sum of positive squares in 2 ways, for example, as 459373489 + 1172514564 = 21433^2 + 34242^2 .

It is a cyclic number.

It is not a de Polignac number, because 1631888053 - 2⁹ = 1631887541 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 (1631888057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2337600 + ... + 2338297.

It is an arithmetic number, because the mean of its divisors is an integer number (409141075).

Almost surely, 2^1631888053 is an apocalyptic number.

It is an amenable number.

1631888053 is a deficient number, since it is larger than the sum of its proper divisors (4676247).

1631888053 is an equidigital number, since it uses as much as digits as its factorization.

1631888053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4676246.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 1631888053 is about 40396.6341790996. The cubic root of 1631888053 is about 1177.3261425929.

The spelling of 1631888053 in words is "one billion, six hundred thirty-one million, eight hundred eighty-eight thousand, fifty-three".