1303993690 has 8 divisors (see below), whose sum is σ = 2347188660. Its totient is φ = 521597472.

The previous prime is 1303993673. The next prime is 1303993727. The reversal of 1303993690 is 963993031.

It can be written as a sum of positive squares in 2 ways, for example, as 1232641881 + 71351809 = 35109^2 + 8447^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1303993690² = 3400799087119632200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65199675 + ... + 65199694.

Almost surely, 2^1303993690 is an apocalyptic number.

1303993690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1303993690 is a deficient number, since it is larger than the sum of its proper divisors (1043194970).

1303993690 is a wasteful number, since it uses less digits than its factorization.

1303993690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130399376.

The product of its (nonzero) digits is 118098, while the sum is 43.

The square root of 1303993690 is about 36110.8528007855. The cubic root of 1303993690 is about 1092.5093520486.

The spelling of 1303993690 in words is "one billion, three hundred three million, nine hundred ninety-three thousand, six hundred ninety".