1658243328 has 144 divisors (see below), whose sum is σ = 5263512576. Its totient is φ = 453150720.

The previous prime is 1658243317. The next prime is 1658243329. The reversal of 1658243328 is 8233428561.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 1658243328.

It is not an unprimeable number, because it can be changed into a prime (1658243329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116943 + ... + 130353.

Almost surely, 2^1658243328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1658243328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2631756288).

1658243328 is an abundant number, since it is smaller than the sum of its proper divisors (3605269248).

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

1658243328 is a wasteful number, since it uses less digits than its factorization.

1658243328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13460 (or 13446 counting only the distinct ones).

The product of its digits is 276480, while the sum is 42.

The square root of 1658243328 is about 40721.5339593194. The cubic root of 1658243328 is about 1183.6303326104.

The spelling of 1658243328 in words is "one billion, six hundred fifty-eight million, two hundred forty-three thousand, three hundred twenty-eight".