1316698650 has 144 divisors (see below), whose sum is σ = 3751807488. Its totient is φ = 330480000.

The previous prime is 1316698639. The next prime is 1316698667. The reversal of 1316698650 is 568966131.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1316698596 and 1316698605.

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 71 ways as a sum of consecutive naturals, for example, 514875 + ... + 517425.

Almost surely, 2^1316698650 is an apocalyptic number.

1316698650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1316698650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1875903744).

1316698650 is an abundant number, since it is smaller than the sum of its proper divisors (2435108838).

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

1316698650 is a wasteful number, since it uses less digits than its factorization.

1316698650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2637 (or 2629 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 1316698650 is about 36286.3424720652. The cubic root of 1316698650 is about 1096.0460386339.

The spelling of 1316698650 in words is "one billion, three hundred sixteen million, six hundred ninety-eight thousand, six hundred fifty".