1046638836 has 18 divisors (see below), whose sum is σ = 2645670482. Its totient is φ = 348879600.

The previous prime is 1046638783. The next prime is 1046638837. The reversal of 1046638836 is 6388366401.

1046638836 is a `hidden beast` number, since 1 + 0 + 4 + 6 + 638 + 8 + 3 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1043936100 + 2702736 = 32310^2 + 1644^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 1046638791 and 1046638800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1046638837) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14536615 + ... + 14536686.

Almost surely, 2^1046638836 is an apocalyptic number.

It is an amenable number.

1046638836 is an abundant number, since it is smaller than the sum of its proper divisors (1599031646).

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

1046638836 is a wasteful number, since it uses less digits than its factorization.

1046638836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29073311 (or 29073306 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The square root of 1046638836 is about 32351.7980334942. The cubic root of 1046638836 is about 1015.3106658213.

The spelling of 1046638836 in words is "one billion, forty-six million, six hundred thirty-eight thousand, eight hundred thirty-six".