1306641436 has 24 divisors (see below), whose sum is σ = 2331975744. Its totient is φ = 640386240.

The previous prime is 1306641397. The next prime is 1306641439. The reversal of 1306641436 is 6341466031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306641439) 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, 290541 + ... + 295003.

It is an arithmetic number, because the mean of its divisors is an integer number (97165656).

Almost surely, 2^1306641436 is an apocalyptic number.

It is an amenable number.

1306641436 is a deficient number, since it is larger than the sum of its proper divisors (1025334308).

1306641436 is a wasteful number, since it uses less digits than its factorization.

1306641436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5901 (or 5899 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 1306641436 is about 36147.4955702328. The cubic root of 1306641436 is about 1093.2482951988.

The spelling of 1306641436 in words is "one billion, three hundred six million, six hundred forty-one thousand, four hundred thirty-six".