1641540536 has 32 divisors (see below), whose sum is σ = 3262893840. Its totient is φ = 771552768.

The previous prime is 1641540497. The next prime is 1641540541. The reversal of 1641540536 is 6350451461.

It is a junction number, because it is equal to n+sod(n) for n = 1641540496 and 1641540505.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112391 + ... + 126153.

Almost surely, 2^1641540536 is an apocalyptic number.

It is an amenable number.

1641540536 is a deficient number, since it is larger than the sum of its proper divisors (1621353304).

1641540536 is a wasteful number, since it uses less digits than its factorization.

1641540536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14663 (or 14659 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 1641540536 is about 40515.9294105417. The cubic root of 1641540536 is about 1179.6428431676.

Adding to 1641540536 its reverse (6350451461), we get a palindrome (7991991997).

The spelling of 1641540536 in words is "one billion, six hundred forty-one million, five hundred forty thousand, five hundred thirty-six".