1658598016 has 16 divisors (see below), whose sum is σ = 3304238490. Its totient is φ = 829298944.

The previous prime is 1658597999. The next prime is 1658598017. The reversal of 1658598016 is 6108958561.

It can be written as a sum of positive squares in only one way, i.e., 1656164416 + 2433600 = 40696^2 + 1560^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1658598017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6478771 + ... + 6479026.

Almost surely, 2^1658598016 is an apocalyptic number.

1658598016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1658598016 is a deficient number, since it is larger than the sum of its proper divisors (1645640474).

1658598016 is an equidigital number, since it uses as much as digits as its factorization.

1658598016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12957811 (or 12957799 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 49.

The square root of 1658598016 is about 40725.8887686936. Note that the first 3 decimals coincide. The cubic root of 1658598016 is about 1183.7147169987.

The spelling of 1658598016 in words is "one billion, six hundred fifty-eight million, five hundred ninety-eight thousand, sixteen".