1303999680 has 56 divisors (see below), whose sum is σ = 4140202032. Its totient is φ = 347732992.

The previous prime is 1303999663. The next prime is 1303999681. The reversal of 1303999680 is 869993031.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (1303999681) 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, 678207 + ... + 680126.

Almost surely, 2^1303999680 is an apocalyptic number.

1303999680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1303999680 is an abundant number, since it is smaller than the sum of its proper divisors (2836202352).

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

1303999680 is a wasteful number, since it uses less digits than its factorization.

1303999680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358353 (or 1358343 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 48.

The square root of 1303999680 is about 36110.9357397451. The cubic root of 1303999680 is about 1092.5110248893.

The spelling of 1303999680 in words is "one billion, three hundred three million, nine hundred ninety-nine thousand, six hundred eighty".