1259345880 has 320 divisors, whose sum is σ = 4720161600. Its totient is φ = 299013120.

The previous prime is 1259345863. The next prime is 1259345881. The reversal of 1259345880 is 885439521.

1259345880 is a `hidden beast` number, since 1 + 2 + 593 + 4 + 58 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1259345881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1220965 + ... + 1221995.

It is an arithmetic number, because the mean of its divisors is an integer number (14750505).

Almost surely, 2^1259345880 is an apocalyptic number.

1259345880 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 1259345880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2360080800).

1259345880 is an abundant number, since it is smaller than the sum of its proper divisors (3460815720).

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

1259345880 is a wasteful number, since it uses less digits than its factorization.

1259345880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096 (or 1083 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The square root of 1259345880 is about 35487.2636307732. The cubic root of 1259345880 is about 1079.8953602323.

The spelling of 1259345880 in words is "one billion, two hundred fifty-nine million, three hundred forty-five thousand, eight hundred eighty".