1310939740 has 192 divisors, whose sum is σ = 3292047360. Its totient is φ = 433664000.

The previous prime is 1310939737. The next prime is 1310939759. The reversal of 1310939740 is 479390131.

It is a super-2 number, since 2×1310939740² = 3437126003822535200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1310939740.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14729616 + ... + 14729704.

It is an arithmetic number, because the mean of its divisors is an integer number (17146080).

Almost surely, 2^1310939740 is an apocalyptic number.

1310939740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1310939740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1646023680).

1310939740 is an abundant number, since it is smaller than the sum of its proper divisors (1981107620).

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

1310939740 is a wasteful number, since it uses less digits than its factorization.

1310939740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 242 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 1310939740 is about 36206.9018282426. The cubic root of 1310939740 is about 1094.4457597010.

The spelling of 1310939740 in words is "one billion, three hundred ten million, nine hundred thirty-nine thousand, seven hundred forty".