1666526130 has 64 divisors (see below), whose sum is σ = 4454421120. Its totient is φ = 443371968.

The previous prime is 1666526123. The next prime is 1666526137. The reversal of 1666526130 is 316256661.

It is an interprime number because it is at equal distance from previous prime (1666526123) and next prime (1666526137).

It is not an unprimeable number, because it can be changed into a prime (1666526137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112644 + ... + 126576.

It is an arithmetic number, because the mean of its divisors is an integer number (69600330).

Almost surely, 2^1666526130 is an apocalyptic number.

1666526130 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 1666526130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2227210560).

1666526130 is an abundant number, since it is smaller than the sum of its proper divisors (2787894990).

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

1666526130 is a wasteful number, since it uses less digits than its factorization.

1666526130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14392 (or 14386 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 1666526130 is about 40823.1077944833. The cubic root of 1666526130 is about 1185.5977756314.

The spelling of 1666526130 in words is "one billion, six hundred sixty-six million, five hundred twenty-six thousand, one hundred thirty".