1611187260 has 96 divisors (see below), whose sum is σ = 4807821312. Its totient is φ = 402209280.

The previous prime is 1611187243. The next prime is 1611187297. The reversal of 1611187260 is 627811161.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52440 + ... + 77280.

It is an arithmetic number, because the mean of its divisors is an integer number (50081472).

Almost surely, 2^1611187260 is an apocalyptic number.

1611187260 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 1611187260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2403910656).

1611187260 is an abundant number, since it is smaller than the sum of its proper divisors (3196634052).

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

1611187260 is a wasteful number, since it uses less digits than its factorization.

1611187260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24923 (or 24921 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 1611187260 is about 40139.5971579188. The cubic root of 1611187260 is about 1172.3267453581.

The spelling of 1611187260 in words is "one billion, six hundred eleven million, one hundred eighty-seven thousand, two hundred sixty".