1666152528 has 40 divisors (see below), whose sum is σ = 4323556608. Its totient is φ = 552890112.

The previous prime is 1666152493. The next prime is 1666152529. The reversal of 1666152528 is 8252516661.

It is a self number, because there is not a number n which added to its sum of digits gives 1666152528.

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 7 ways as a sum of consecutive naturals, for example, 67125 + ... + 88532.

Almost surely, 2^1666152528 is an apocalyptic number.

It is an amenable number.

1666152528 is an abundant number, since it is smaller than the sum of its proper divisors (2657404080).

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

1666152528 is a wasteful number, since it uses less digits than its factorization.

1666152528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155891 (or 155885 counting only the distinct ones).

The product of its digits is 172800, while the sum is 42.

The square root of 1666152528 is about 40818.5316737386. The cubic root of 1666152528 is about 1185.5091731995.

The spelling of 1666152528 in words is "one billion, six hundred sixty-six million, one hundred fifty-two thousand, five hundred twenty-eight".