1611327445 has 64 divisors (see below), whose sum is σ = 2508226560. Its totient is φ = 965783808.

The previous prime is 1611327413. The next prime is 1611327449. The reversal of 1611327445 is 5447231161.

It is a cyclic number.

It is not a de Polignac number, because 1611327445 - 2⁵ = 1611327413 is a prime.

It is a super-2 number, since 2×1611327445² = 5192752270020456050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1611327445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1611327449) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1119036 + ... + 1120474.

It is an arithmetic number, because the mean of its divisors is an integer number (39191040).

Almost surely, 2^1611327445 is an apocalyptic number.

It is an amenable number.

1611327445 is a deficient number, since it is larger than the sum of its proper divisors (896899115).

1611327445 is a wasteful number, since it uses less digits than its factorization.

1611327445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594.

The product of its digits is 20160, while the sum is 34.

The square root of 1611327445 is about 40141.3433382591. The cubic root of 1611327445 is about 1172.3607446875.

The spelling of 1611327445 in words is "one billion, six hundred eleven million, three hundred twenty-seven thousand, four hundred forty-five".