1665773130 has 288 divisors, whose sum is σ = 5091159744. Its totient is φ = 347493888.

The previous prime is 1665773119. The next prime is 1665773141. The reversal of 1665773130 is 313775661.

It is an interprime number because it is at equal distance from previous prime (1665773119) and next prime (1665773141).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 22818774 + ... + 22818846.

It is an arithmetic number, because the mean of its divisors is an integer number (17677638).

Almost surely, 2^1665773130 is an apocalyptic number.

1665773130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1665773130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2545579872).

1665773130 is an abundant number, since it is smaller than the sum of its proper divisors (3425386614).

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

1665773130 is a wasteful number, since it uses less digits than its factorization.

1665773130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 39.

The square root of 1665773130 is about 40813.8840347252. The cubic root of 1665773130 is about 1185.4191826483.

The spelling of 1665773130 in words is "one billion, six hundred sixty-five million, seven hundred seventy-three thousand, one hundred thirty".