1660293216 has 36 divisors (see below), whose sum is σ = 4721459652. Its totient is φ = 553430976.

The previous prime is 1660293197. The next prime is 1660293221. The reversal of 1660293216 is 6123920661.

It is a happy number.

1660293216 is a `hidden beast` number, since 1 + 6 + 602 + 9 + 32 + 16 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2882166 + ... + 2882741.

It is an arithmetic number, because the mean of its divisors is an integer number (131151657).

Almost surely, 2^1660293216 is an apocalyptic number.

1660293216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1660293216 is an abundant number, since it is smaller than the sum of its proper divisors (3061166436).

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

1660293216 is a wasteful number, since it uses less digits than its factorization.

1660293216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5764923 (or 5764912 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 1660293216 is about 40746.6957678779. The cubic root of 1660293216 is about 1184.1178586718.

The spelling of 1660293216 in words is "one billion, six hundred sixty million, two hundred ninety-three thousand, two hundred sixteen".