1616989259 has 8 divisors (see below), whose sum is σ = 1630079088. Its totient is φ = 1603952640.

The previous prime is 1616989249. The next prime is 1616989261. The reversal of 1616989259 is 9529896161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1616989259 is a prime.

It is a super-2 number, since 2×1616989259² = 5229308527442738162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1616989249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48884 + ... + 74990.

It is an arithmetic number, because the mean of its divisors is an integer number (203759886).

Almost surely, 2^1616989259 is an apocalyptic number.

1616989259 is a deficient number, since it is larger than the sum of its proper divisors (13089829).

1616989259 is a wasteful number, since it uses less digits than its factorization.

1616989259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26605.

The product of its digits is 2099520, while the sum is 56.

The square root of 1616989259 is about 40211.8049706799. The cubic root of 1616989259 is about 1173.7322700157.

The spelling of 1616989259 in words is "one billion, six hundred sixteen million, nine hundred eighty-nine thousand, two hundred fifty-nine".