1599689442 has 48 divisors (see below), whose sum is σ = 3512036448. Its totient is φ = 485447040.

The previous prime is 1599689417. The next prime is 1599689453. The reversal of 1599689442 is 2449869951.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63217 + ... + 84827.

It is an arithmetic number, because the mean of its divisors is an integer number (73167426).

Almost surely, 2^1599689442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1599689442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1756018224).

1599689442 is an abundant number, since it is smaller than the sum of its proper divisors (1912347006).

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

1599689442 is a wasteful number, since it uses less digits than its factorization.

1599689442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21715 (or 21702 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 57.

The square root of 1599689442 is about 39996.1178366101. The cubic root of 1599689442 is about 1169.5314172969.

The spelling of 1599689442 in words is "one billion, five hundred ninety-nine million, six hundred eighty-nine thousand, four hundred forty-two".