1611615160 has 64 divisors (see below), whose sum is σ = 3686176800. Its totient is φ = 634023936.

The previous prime is 1611615143. The next prime is 1611615163. The reversal of 1611615160 is 615161161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1611615163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1596736 + ... + 1597744.

Almost surely, 2^1611615160 is an apocalyptic number.

1611615160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1611615160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1843088400).

1611615160 is an abundant number, since it is smaller than the sum of its proper divisors (2074561640).

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

1611615160 is a wasteful number, since it uses less digits than its factorization.

1611615160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640 (or 1636 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 1611615160 is about 40144.9269522315. The cubic root of 1611615160 is about 1172.4305185662.

The spelling of 1611615160 in words is "one billion, six hundred eleven million, six hundred fifteen thousand, one hundred sixty".