1631624053 has 4 divisors (see below), whose sum is σ = 1642574700. Its totient is φ = 1620673408.

The previous prime is 1631624021. The next prime is 1631624077. The reversal of 1631624053 is 3504261361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3504261361 = 281 ⋅12470681.

It can be written as a sum of positive squares in 2 ways, for example, as 77845329 + 1553778724 = 8823^2 + 39418^2 .

It is a cyclic number.

It is not a de Polignac number, because 1631624053 - 2⁵ = 1631624021 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 (1631624003) 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, 5475100 + ... + 5475397.

It is an arithmetic number, because the mean of its divisors is an integer number (410643675).

Almost surely, 2^1631624053 is an apocalyptic number.

It is an amenable number.

1631624053 is a deficient number, since it is larger than the sum of its proper divisors (10950647).

1631624053 is a wasteful number, since it uses less digits than its factorization.

1631624053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10950646.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 1631624053 is about 40393.3664479701. The cubic root of 1631624053 is about 1177.2626515417.

The spelling of 1631624053 in words is "one billion, six hundred thirty-one million, six hundred twenty-four thousand, fifty-three".