1316226740 has 12 divisors (see below), whose sum is σ = 2764076196. Its totient is φ = 526490688.

The previous prime is 1316226721. The next prime is 1316226757. The reversal of 1316226740 is 476226131.

It can be written as a sum of positive squares in 2 ways, for example, as 752734096 + 563492644 = 27436^2 + 23738^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1316226697 and 1316226706.

It is a congruent 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, 32905649 + ... + 32905688.

It is an arithmetic number, because the mean of its divisors is an integer number (230339683).

Almost surely, 2^1316226740 is an apocalyptic number.

1316226740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1316226740 is an abundant number, since it is smaller than the sum of its proper divisors (1447849456).

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

1316226740 is a wasteful number, since it uses less digits than its factorization.

1316226740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65811346 (or 65811344 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 1316226740 is about 36279.8393050465. The cubic root of 1316226740 is about 1095.9150805766.

The spelling of 1316226740 in words is "one billion, three hundred sixteen million, two hundred twenty-six thousand, seven hundred forty".