481581629 has 2 divisors, whose sum is σ = 481581630. Its totient is φ = 481581628.

The previous prime is 481581577. The next prime is 481581631. The reversal of 481581629 is 926185184.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 479522404 + 2059225 = 21898^2 + 1435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-481581629 is a prime.

Together with 481581631, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 481581629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (481581649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240790814 + 240790815.

It is an arithmetic number, because the mean of its divisors is an integer number (240790815).

Almost surely, 2^481581629 is an apocalyptic number.

It is an amenable number.

481581629 is a deficient number, since it is larger than the sum of its proper divisors (1).

481581629 is an equidigital number, since it uses as much as digits as its factorization.

481581629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 44.

The square root of 481581629 is about 21944.9681931872. The cubic root of 481581629 is about 783.8325670886.

The spelling of 481581629 in words is "four hundred eighty-one million, five hundred eighty-one thousand, six hundred twenty-nine".