1386534636 has 36 divisors (see below), whose sum is σ = 3562313664. Its totient is φ = 454600800.

The previous prime is 1386534607. The next prime is 1386534641. The reversal of 1386534636 is 6364356831.

1386534636 is a `hidden beast` number, since 1 + 3 + 8 + 6 + 5 + 3 + 4 + 636 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 1386534591 and 1386534600.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 313500 + ... + 317891.

Almost surely, 2^1386534636 is an apocalyptic number.

It is an amenable number.

1386534636 is an abundant number, since it is smaller than the sum of its proper divisors (2175779028).

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

1386534636 is a wasteful number, since it uses less digits than its factorization.

1386534636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631462 (or 631457 counting only the distinct ones).

The product of its digits is 933120, while the sum is 45.

The square root of 1386534636 is about 37236.2006117703. The cubic root of 1386534636 is about 1115.0908211595.

The spelling of 1386534636 in words is "one billion, three hundred eighty-six million, five hundred thirty-four thousand, six hundred thirty-six".