1599905280 has 160 divisors (see below), whose sum is σ = 5240477088. Its totient is φ = 416153600.

The previous prime is 1599905273. The next prime is 1599905287. The reversal of 1599905280 is 825099951.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1599905273) and next prime (1599905287).

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1599905287) 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, 312340 + ... + 317420.

Almost surely, 2^1599905280 is an apocalyptic number.

1599905280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1599905280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2620238544).

1599905280 is an abundant number, since it is smaller than the sum of its proper divisors (3640571808).

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

1599905280 is an equidigital number, since it uses as much as digits as its factorization.

1599905280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5148 (or 5132 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 48.

The square root of 1599905280 is about 39998.8159824763. The cubic root of 1599905280 is about 1169.5840145830.

The spelling of 1599905280 in words is "one billion, five hundred ninety-nine million, nine hundred five thousand, two hundred eighty".