1016644345 has 8 divisors (see below), whose sum is σ = 1223872776. Its totient is φ = 810715776.

The previous prime is 1016644303. The next prime is 1016644351. The reversal of 1016644345 is 5434466101.

It can be written as a sum of positive squares in 4 ways, for example, as 26409321 + 990235024 = 5139^2 + 31468^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1016644345 - 2²⁷ = 882426617 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1016644345.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323242 + ... + 326371.

It is an arithmetic number, because the mean of its divisors is an integer number (152984097).

Almost surely, 2^1016644345 is an apocalyptic number.

It is an amenable number.

1016644345 is a deficient number, since it is larger than the sum of its proper divisors (207228431).

1016644345 is an equidigital number, since it uses as much as digits as its factorization.

1016644345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649931.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 1016644345 is about 31884.8607492647. The cubic root of 1016644345 is about 1005.5176149326.

The spelling of 1016644345 in words is "one billion, sixteen million, six hundred forty-four thousand, three hundred forty-five".