1611146660 has 24 divisors (see below), whose sum is σ = 3465931896. Its totient is φ = 628739840.

The previous prime is 1611146657. The next prime is 1611146683. The reversal of 1611146660 is 666411161.

It can be written as a sum of positive squares in 4 ways, for example, as 87616 + 1611059044 = 296^2 + 40138^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 981587 + ... + 983226.

It is an arithmetic number, because the mean of its divisors is an integer number (144413829).

Almost surely, 2^1611146660 is an apocalyptic number.

1611146660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1611146660 is an abundant number, since it is smaller than the sum of its proper divisors (1854785236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1611146660 is a wasteful number, since it uses less digits than its factorization.

1611146660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964863 (or 1964861 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 1611146660 is about 40139.0914197120. The cubic root of 1611146660 is about 1172.3168981962.

The spelling of 1611146660 in words is "one billion, six hundred eleven million, one hundred forty-six thousand, six hundred sixty".