1306944536 has 16 divisors (see below), whose sum is σ = 2510290440. Its totient is φ = 637533760.

The previous prime is 1306944521. The next prime is 1306944559. The reversal of 1306944536 is 6354496031.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a junction number, because it is equal to n+sod(n) for n = 1306944493 and 1306944502.

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, 1991966 + ... + 1992621.

Almost surely, 2^1306944536 is an apocalyptic number.

It is an amenable number.

1306944536 is a deficient number, since it is larger than the sum of its proper divisors (1203345904).

1306944536 is a wasteful number, since it uses less digits than its factorization.

1306944536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3984634 (or 3984630 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 41.

The square root of 1306944536 is about 36151.6878720759. The cubic root of 1306944536 is about 1093.3328218155.

The spelling of 1306944536 in words is "one billion, three hundred six million, nine hundred forty-four thousand, five hundred thirty-six".