1612456631 has 4 divisors (see below), whose sum is σ = 1634545152. Its totient is φ = 1590368112.

The previous prime is 1612456621. The next prime is 1612456649. The reversal of 1612456631 is 1366542161.

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

It is a cyclic number.

It is not a de Polignac number, because 1612456631 - 2⁶ = 1612456567 is a prime.

It is a super-2 number, since 2×1612456631² = 5200032773711740322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1612456591 and 1612456600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1612456621) 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, 11044151 + ... + 11044296.

It is an arithmetic number, because the mean of its divisors is an integer number (408636288).

Almost surely, 2^1612456631 is an apocalyptic number.

1612456631 is a deficient number, since it is larger than the sum of its proper divisors (22088521).

1612456631 is an equidigital number, since it uses as much as digits as its factorization.

1612456631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22088520.

The product of its digits is 25920, while the sum is 35.

The square root of 1612456631 is about 40155.4059996908. The cubic root of 1612456631 is about 1172.6345363843.

Adding to 1612456631 its reverse (1366542161), we get a palindrome (2978998792).

The spelling of 1612456631 in words is "one billion, six hundred twelve million, four hundred fifty-six thousand, six hundred thirty-one".