1659628080 has 120 divisors (see below), whose sum is σ = 6080302800. Its totient is φ = 402332160.

The previous prime is 1659628079. The next prime is 1659628097. The reversal of 1659628080 is 808269561.

1659628080 is a `hidden beast` number, since 16 + 5 + 9 + 628 + 0 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96855 + ... + 112694.

It is an arithmetic number, because the mean of its divisors is an integer number (50669190).

Almost surely, 2^1659628080 is an apocalyptic number.

1659628080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1659628080 is an abundant number, since it is smaller than the sum of its proper divisors (4420674720).

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

1659628080 is a wasteful number, since it uses less digits than its factorization.

1659628080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209579 (or 209570 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The square root of 1659628080 is about 40738.5331105576. The cubic root of 1659628080 is about 1183.9597129888.

The spelling of 1659628080 in words is "one billion, six hundred fifty-nine million, six hundred twenty-eight thousand, eighty".