1661086130 has 48 divisors (see below), whose sum is σ = 3339797184. Its totient is φ = 589911840.

The previous prime is 1661086129. The next prime is 1661086139. The reversal of 1661086130 is 316801661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1661086139) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 199307 + ... + 207473.

It is an arithmetic number, because the mean of its divisors is an integer number (69579108).

Almost surely, 2^1661086130 is an apocalyptic number.

1661086130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1661086130 is an abundant number, since it is smaller than the sum of its proper divisors (1678711054).

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

1661086130 is a wasteful number, since it uses less digits than its factorization.

1661086130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8271 (or 8228 counting only the distinct ones).

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

The square root of 1661086130 is about 40756.4244015591. The cubic root of 1661086130 is about 1184.3063302407.

Adding to 1661086130 its reverse (316801661), we get a palindrome (1977887791).

The spelling of 1661086130 in words is "one billion, six hundred sixty-one million, eighty-six thousand, one hundred thirty".