1666152527 has 16 divisors (see below), whose sum is σ = 1836394560. Its totient is φ = 1502323200.

The previous prime is 1666152493. The next prime is 1666152529. The reversal of 1666152527 is 7252516661.

It is a cyclic number.

It is not a de Polignac number, because 1666152527 - 2²⁴ = 1649375311 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666152529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92327 + ... + 108887.

It is an arithmetic number, because the mean of its divisors is an integer number (114774660).

Almost surely, 2^1666152527 is an apocalyptic number.

1666152527 is a deficient number, since it is larger than the sum of its proper divisors (170242033).

1666152527 is a wasteful number, since it uses less digits than its factorization.

1666152527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16754.

The product of its digits is 151200, while the sum is 41.

The square root of 1666152527 is about 40818.5316614892. The cubic root of 1666152527 is about 1185.5091729623.

The spelling of 1666152527 in words is "one billion, six hundred sixty-six million, one hundred fifty-two thousand, five hundred twenty-seven".