1549641436 has 12 divisors (see below), whose sum is σ = 3099282928. Its totient is φ = 664132032.

The previous prime is 1549641421. The next prime is 1549641449. The reversal of 1549641436 is 6341469451.

1549641436 is an admirable number.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1549641392 and 1549641401.

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, 27672141 + ... + 27672196.

Almost surely, 2^1549641436 is an apocalyptic number.

It is an amenable number.

1549641436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1549641436 is a wasteful number, since it uses less digits than its factorization.

1549641436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55344348 (or 55344346 counting only the distinct ones).

The product of its digits is 311040, while the sum is 43.

The square root of 1549641436 is about 39365.4853393172. The cubic root of 1549641436 is about 1157.2052807775.

The spelling of 1549641436 in words is "one billion, five hundred forty-nine million, six hundred forty-one thousand, four hundred thirty-six".