1600645489 has 16 divisors (see below), whose sum is σ = 1746835200. Its totient is φ = 1460830464.

The previous prime is 1600645471. The next prime is 1600645507. The reversal of 1600645489 is 9845460061.

It is an interprime number because it is at equal distance from previous prime (1600645471) and next prime (1600645507).

It is a cyclic number.

It is not a de Polignac number, because 1600645489 - 2¹¹ = 1600643441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1600645469) 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, 77902 + ... + 96280.

It is an arithmetic number, because the mean of its divisors is an integer number (109177200).

Almost surely, 2^1600645489 is an apocalyptic number.

It is an amenable number.

1600645489 is a deficient number, since it is larger than the sum of its proper divisors (146189711).

1600645489 is a wasteful number, since it uses less digits than its factorization.

1600645489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18552.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 1600645489 is about 40008.0677988828. The cubic root of 1600645489 is about 1169.7643592458.

The spelling of 1600645489 in words is "one billion, six hundred million, six hundred forty-five thousand, four hundred eighty-nine".