1306325639 has 8 divisors (see below), whose sum is σ = 1376064000. Its totient is φ = 1236685752.

The previous prime is 1306325633. The next prime is 1306325653. The reversal of 1306325639 is 9365236031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1306325639 - 2⁴ = 1306325623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306325633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3452 + ... + 51230.

It is an arithmetic number, because the mean of its divisors is an integer number (172008000).

Almost surely, 2^1306325639 is an apocalyptic number.

1306325639 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1306325639 is a deficient number, since it is larger than the sum of its proper divisors (69738361).

1306325639 is a wasteful number, since it uses less digits than its factorization.

1306325639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49237.

The product of its (nonzero) digits is 87480, while the sum is 38.

The square root of 1306325639 is about 36143.1271336612. The cubic root of 1306325639 is about 1093.1602138171.

The spelling of 1306325639 in words is "one billion, three hundred six million, three hundred twenty-five thousand, six hundred thirty-nine".