1612163251 has 2 divisors, whose sum is σ = 1612163252. Its totient is φ = 1612163250.

The previous prime is 1612163249. The next prime is 1612163257. The reversal of 1612163251 is 1523612161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1612163251 - 2¹ = 1612163249 is a prime.

Together with 1612163249, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1612163257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806081625 + 806081626.

It is an arithmetic number, because the mean of its divisors is an integer number (806081626).

Almost surely, 2^1612163251 is an apocalyptic number.

1612163251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1612163251 is an equidigital number, since it uses as much as digits as its factorization.

1612163251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 28.

The square root of 1612163251 is about 40151.7527761865. The cubic root of 1612163251 is about 1172.5634133578.

The spelling of 1612163251 in words is "one billion, six hundred twelve million, one hundred sixty-three thousand, two hundred fifty-one".