1599994561 has 8 divisors (see below), whose sum is σ = 1749849984. Its totient is φ = 1450872720.

The previous prime is 1599994531. The next prime is 1599994567. The reversal of 1599994561 is 1654999951.

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

It is not a de Polignac number, because 1599994561 - 2¹³ = 1599986369 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1599994496 and 1599994505.

It is not an unprimeable number, because it can be changed into a prime (1599994567) 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, 178825 + ... + 187558.

It is an arithmetic number, because the mean of its divisors is an integer number (218731248).

Almost surely, 2^1599994561 is an apocalyptic number.

1599994561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1599994561 is a deficient number, since it is larger than the sum of its proper divisors (149855423).

1599994561 is a wasteful number, since it uses less digits than its factorization.

1599994561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366791.

The product of its digits is 3936600, while the sum is 58.

The square root of 1599994561 is about 39999.9320124422. The cubic root of 1599994561 is about 1169.6057699726.

The spelling of 1599994561 in words is "one billion, five hundred ninety-nine million, nine hundred ninety-four thousand, five hundred sixty-one".