1650543436 has 12 divisors (see below), whose sum is σ = 2899691928. Its totient is φ = 822060032.

The previous prime is 1650543431. The next prime is 1650543463. The reversal of 1650543436 is 6343450561.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1650543395 and 1650543404.

It is not an unprimeable number, because it can be changed into a prime (1650543431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 801766 + ... + 803821.

It is an arithmetic number, because the mean of its divisors is an integer number (241640994).

Almost surely, 2^1650543436 is an apocalyptic number.

It is an amenable number.

1650543436 is a deficient number, since it is larger than the sum of its proper divisors (1249148492).

1650543436 is a wasteful number, since it uses less digits than its factorization.

1650543436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605848 (or 1605846 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

The square root of 1650543436 is about 40626.8807072362. The cubic root of 1650543436 is about 1181.7954654619.

Adding to 1650543436 its reverse (6343450561), we get a palindrome (7993993997).

It can be divided in two parts, 165054 and 3436, that added together give a triangular number (168490 = T₅₈₀).

The spelling of 1650543436 in words is "one billion, six hundred fifty million, five hundred forty-three thousand, four hundred thirty-six".