1301550000 has 120 divisors (see below), whose sum is σ = 4203137232. Its totient is φ = 347040000.

The previous prime is 1301549993. The next prime is 1301550001. The reversal of 1301550000 is 551031.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (1301550001) 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 23 ways as a sum of consecutive naturals, for example, 145662 + ... + 154338.

Almost surely, 2^1301550000 is an apocalyptic number.

1301550000 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 1301550000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2101568616).

1301550000 is an abundant number, since it is smaller than the sum of its proper divisors (2901587232).

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

1301550000 is an frugal number, since it uses more digits than its factorization.

1301550000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8713 (or 8687 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 15.

The square root of 1301550000 is about 36077.0009840064. Note that the first 3 decimals coincide. The cubic root of 1301550000 is about 1091.8264694939.

The spelling of 1301550000 in words is "one billion, three hundred one million, five hundred fifty thousand".