1611125164 has 72 divisors (see below), whose sum is σ = 3184154064. Its totient is φ = 712483200.

The previous prime is 1611125147. The next prime is 1611125167. The reversal of 1611125164 is 4615211161.

It is not an unprimeable number, because it can be changed into a prime (1611125167) 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 in 23 ways as a sum of consecutive naturals, for example, 4642839 + ... + 4643185.

It is an arithmetic number, because the mean of its divisors is an integer number (44224362).

Almost surely, 2^1611125164 is an apocalyptic number.

It is an amenable number.

1611125164 is a deficient number, since it is larger than the sum of its proper divisors (1573028900).

1611125164 is a wasteful number, since it uses less digits than its factorization.

1611125164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607 (or 594 counting only the distinct ones).

The product of its digits is 1440, while the sum is 28.

The square root of 1611125164 is about 40138.8236499278. The cubic root of 1611125164 is about 1172.3116844693.

The spelling of 1611125164 in words is "one billion, six hundred eleven million, one hundred twenty-five thousand, one hundred sixty-four".