1658684416 has 44 divisors (see below), whose sum is σ = 3323509200. Its totient is φ = 827402240.

The previous prime is 1658684411. The next prime is 1658684453. The reversal of 1658684416 is 6144868561.

It is a super-2 number, since 2×1658684416² = 5502467983762522112, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1658684416.

It is not an unprimeable number, because it can be changed into a prime (1658684411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 501135 + ... + 504433.

It is an arithmetic number, because the mean of its divisors is an integer number (75534300).

Almost surely, 2^1658684416 is an apocalyptic number.

1658684416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1658684416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1661754600).

1658684416 is an abundant number, since it is smaller than the sum of its proper divisors (1664824784).

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

1658684416 is an equidigital number, since it uses as much as digits as its factorization.

1658684416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3810 (or 3792 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 49.

The square root of 1658684416 is about 40726.9495052109. The cubic root of 1658684416 is about 1183.7352707384.

The spelling of 1658684416 in words is "one billion, six hundred fifty-eight million, six hundred eighty-four thousand, four hundred sixteen".