1300638812 has 24 divisors (see below), whose sum is σ = 2507630832. Its totient is φ = 585344000.

The previous prime is 1300638811. The next prime is 1300638827. The reversal of 1300638812 is 2188360031.

It is a happy number.

It is a super-2 number, since 2×1300638812² = 3383322638561542688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1300638811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141893 + ... + 150780.

It is an arithmetic number, because the mean of its divisors is an integer number (104484618).

Almost surely, 2^1300638812 is an apocalyptic number.

It is an amenable number.

1300638812 is a deficient number, since it is larger than the sum of its proper divisors (1206992020).

1300638812 is a wasteful number, since it uses less digits than its factorization.

1300638812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292789 (or 292787 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1300638812 is about 36064.3703951698. The cubic root of 1300638812 is about 1091.5716217028.

Adding to 1300638812 its reverse (2188360031), we get a palindrome (3488998843).

The spelling of 1300638812 in words is "one billion, three hundred million, six hundred thirty-eight thousand, eight hundred twelve".