1307797650 has 120 divisors (see below), whose sum is σ = 3672304020. Its totient is φ = 345047040.

The previous prime is 1307797643. The next prime is 1307797669. The reversal of 1307797650 is 567977031.

1307797650 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 371988369 + 935809281 = 19287^2 + 30591^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1307797596 and 1307797605.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 391186 + ... + 394514.

Almost surely, 2^1307797650 is an apocalyptic number.

1307797650 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 1307797650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1836152010).

1307797650 is an abundant number, since it is smaller than the sum of its proper divisors (2364506370).

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

1307797650 is a wasteful number, since it uses less digits than its factorization.

1307797650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3450 (or 3436 counting only the distinct ones).

The product of its (nonzero) digits is 277830, while the sum is 45.

The square root of 1307797650 is about 36163.4850367052. The cubic root of 1307797650 is about 1093.5706627325.

The spelling of 1307797650 in words is "one billion, three hundred seven million, seven hundred ninety-seven thousand, six hundred fifty".