1318352690 has 8 divisors (see below), whose sum is σ = 2373034860. Its totient is φ = 527341072.

The previous prime is 1318352683. The next prime is 1318352701. The reversal of 1318352690 is 962538131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1283860561 + 34492129 = 35831^2 + 5873^2 .

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

It is a super-2 number, since 2×1318352690² = 3476107630460472200, which contains 22 as substring.

It is a Curzon number.

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, 65917625 + ... + 65917644.

Almost surely, 2^1318352690 is an apocalyptic number.

1318352690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1318352690 is a deficient number, since it is larger than the sum of its proper divisors (1054682170).

1318352690 is a wasteful number, since it uses less digits than its factorization.

1318352690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131835276.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 1318352690 is about 36309.1268140670. The cubic root of 1318352690 is about 1096.5047984760.

The spelling of 1318352690 in words is "one billion, three hundred eighteen million, three hundred fifty-two thousand, six hundred ninety".