1642684536 has 40 divisors (see below), whose sum is σ = 4601039520. Its totient is φ = 547561296.

The previous prime is 1642684531. The next prime is 1642684543. The reversal of 1642684536 is 6354862461.

1642684536 is a `hidden beast` number, since 16 + 4 + 26 + 84 + 536 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1642684491 and 1642684500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642684531) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1266856 + ... + 1268151.

It is an arithmetic number, because the mean of its divisors is an integer number (115025988).

Almost surely, 2^1642684536 is an apocalyptic number.

It is an amenable number.

1642684536 is an abundant number, since it is smaller than the sum of its proper divisors (2958354984).

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

1642684536 is a wasteful number, since it uses less digits than its factorization.

1642684536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2535025 (or 2535012 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 1642684536 is about 40530.0448556377. The cubic root of 1642684536 is about 1179.9168130574.

The spelling of 1642684536 in words is "one billion, six hundred forty-two million, six hundred eighty-four thousand, five hundred thirty-six".