1612225591 has 2 divisors, whose sum is σ = 1612225592. Its totient is φ = 1612225590.

The previous prime is 1612225523. The next prime is 1612225597. The reversal of 1612225591 is 1955222161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1612225591 - 2²¹ = 1610128439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1612225597) 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, 806112795 + 806112796.

It is an arithmetic number, because the mean of its divisors is an integer number (806112796).

Almost surely, 2^1612225591 is an apocalyptic number.

1612225591 is a deficient number, since it is larger than the sum of its proper divisors (1).

1612225591 is an equidigital number, since it uses as much as digits as its factorization.

1612225591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10800, while the sum is 34.

The square root of 1612225591 is about 40152.5290735216. The cubic root of 1612225591 is about 1172.5785269350.

The spelling of 1612225591 in words is "one billion, six hundred twelve million, two hundred twenty-five thousand, five hundred ninety-one".