1658972616 has 96 divisors (see below), whose sum is σ = 4841051040. Its totient is φ = 472372992.

The previous prime is 1658972611. The next prime is 1658972621. The reversal of 1658972616 is 6162798561.

It is an interprime number because it is at equal distance from previous prime (1658972611) and next prime (1658972621).

It is not an unprimeable number, because it can be changed into a prime (1658972611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 365835 + ... + 370341.

It is an arithmetic number, because the mean of its divisors is an integer number (50427615).

Almost surely, 2^1658972616 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 1658972616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2420525520).

1658972616 is an abundant number, since it is smaller than the sum of its proper divisors (3182078424).

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

1658972616 is a wasteful number, since it uses less digits than its factorization.

1658972616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4843 (or 4832 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 51.

The square root of 1658972616 is about 40730.4875492548. The cubic root of 1658972616 is about 1183.8038256214.

The spelling of 1658972616 in words is "one billion, six hundred fifty-eight million, nine hundred seventy-two thousand, six hundred sixteen".