1300001004 has 18 divisors (see below), whose sum is σ = 3286113740. Its totient is φ = 433333656.

The previous prime is 1300000991. The next prime is 1300001039. The reversal of 1300001004 is 4001000031.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×1300001004² = 3380005220802016032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

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 5 ways as a sum of consecutive naturals, for example, 18055534 + ... + 18055605.

Almost surely, 2^1300001004 is an apocalyptic number.

It is an amenable number.

1300001004 is an abundant number, since it is smaller than the sum of its proper divisors (1986112736).

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

1300001004 is a wasteful number, since it uses less digits than its factorization.

1300001004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36111149 (or 36111144 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1300001004 is about 36055.5266776121. The cubic root of 1300001004 is about 1091.3931640247.

Adding to 1300001004 its reverse (4001000031), we get a palindrome (5301001035).

The spelling of 1300001004 in words is "one billion, three hundred million, one thousand, four".