1661833130 has 32 divisors (see below), whose sum is σ = 3170120976. Its totient is φ = 625065984.

The previous prime is 1661833111. The next prime is 1661833211. The reversal of 1661833130 is 313381661.

It can be written as a sum of positive squares in 8 ways, for example, as 1434818641 + 227014489 = 37879^2 + 15067^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216722 + ... + 224258.

Almost surely, 2^1661833130 is an apocalyptic number.

1661833130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1661833130 is a deficient number, since it is larger than the sum of its proper divisors (1508287846).

1661833130 is a wasteful number, since it uses less digits than its factorization.

1661833130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8858.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 1661833130 is about 40765.5875708912. The cubic root of 1661833130 is about 1184.4838334280.

The spelling of 1661833130 in words is "one billion, six hundred sixty-one million, eight hundred thirty-three thousand, one hundred thirty".