1601666052 has 24 divisors (see below), whose sum is σ = 4271109696. Its totient is φ = 457618848.

The previous prime is 1601665963. The next prime is 1601666069. The reversal of 1601666052 is 2506661061.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9533643 + ... + 9533810.

It is an arithmetic number, because the mean of its divisors is an integer number (177962904).

Almost surely, 2^1601666052 is an apocalyptic number.

1601666052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1601666052 is an abundant number, since it is smaller than the sum of its proper divisors (2669443644).

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

1601666052 is a wasteful number, since it uses less digits than its factorization.

1601666052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19067467 (or 19067465 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 1601666052 is about 40020.8202314745. The cubic root of 1601666052 is about 1170.0129182590.

The spelling of 1601666052 in words is "one billion, six hundred one million, six hundred sixty-six thousand, fifty-two".