1631624041 has 4 divisors (see below), whose sum is σ = 1633180500. Its totient is φ = 1630067584.

The previous prime is 1631624021. The next prime is 1631624077. The reversal of 1631624041 is 1404261361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1404261361 = 73 ⋅19236457.

It can be written as a sum of positive squares in 2 ways, for example, as 1584358416 + 47265625 = 39804^2 + 6875^2 .

It is a cyclic number.

It is not a de Polignac number, because 1631624041 - 2¹⁹ = 1631099753 is a prime.

It is a super-2 number, since 2×1631624041² = 5324394022338339362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1631624021) 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, 776656 + ... + 778753.

It is an arithmetic number, because the mean of its divisors is an integer number (408295125).

Almost surely, 2^1631624041 is an apocalyptic number.

It is an amenable number.

1631624041 is a deficient number, since it is larger than the sum of its proper divisors (1556459).

1631624041 is a wasteful number, since it uses less digits than its factorization.

1631624041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556458.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1631624041 is about 40393.3662994309. The cubic root of 1631624041 is about 1177.2626486556.

The spelling of 1631624041 in words is "one billion, six hundred thirty-one million, six hundred twenty-four thousand, forty-one".