1306137870 has 48 divisors (see below), whose sum is σ = 3453531120. Its totient is φ = 342398592.

The previous prime is 1306137841. The next prime is 1306137871. The reversal of 1306137870 is 787316031.

1306137870 is a `hidden beast` number, since 1 + 30 + 613 + 7 + 8 + 7 + 0 = 666.

It is a super-2 number, since 2×1306137870² = 3411992270896273800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306137871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117679 + ... + 128298.

It is an arithmetic number, because the mean of its divisors is an integer number (71948565).

Almost surely, 2^1306137870 is an apocalyptic number.

1306137870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1306137870 is an abundant number, since it is smaller than the sum of its proper divisors (2147393250).

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

1306137870 is a wasteful number, since it uses less digits than its factorization.

1306137870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246049 (or 246046 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 1306137870 is about 36140.5294648543. The cubic root of 1306137870 is about 1093.1078349845.

The spelling of 1306137870 in words is "one billion, three hundred six million, one hundred thirty-seven thousand, eight hundred seventy".