1612819129 has 2 divisors, whose sum is σ = 1612819130. Its totient is φ = 1612819128.

The previous prime is 1612819127. The next prime is 1612819141. The reversal of 1612819129 is 9219182161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1057745529 + 555073600 = 32523^2 + 23560^2 .

It is a cyclic number.

It is not a de Polignac number, because 1612819129 - 2¹ = 1612819127 is a prime.

Together with 1612819127, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1612819091 and 1612819100.

It is not a weakly prime, because it can be changed into another prime (1612819127) 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 as a sum of consecutive naturals, namely, 806409564 + 806409565.

It is an arithmetic number, because the mean of its divisors is an integer number (806409565).

Almost surely, 2^1612819129 is an apocalyptic number.

It is an amenable number.

1612819129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1612819129 is an equidigital number, since it uses as much as digits as its factorization.

1612819129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 40.

The square root of 1612819129 is about 40159.9194346801. The cubic root of 1612819129 is about 1172.7224035174.

The spelling of 1612819129 in words is "one billion, six hundred twelve million, eight hundred nineteen thousand, one hundred twenty-nine".