1642220036 has 6 divisors (see below), whose sum is σ = 2873885070. Its totient is φ = 821110016.

The previous prime is 1642220023. The next prime is 1642220117. The reversal of 1642220036 is 6300222461.

It can be written as a sum of positive squares in only one way, i.e., 1546062400 + 96157636 = 39320^2 + 9806^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1642219987 and 1642220014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205277501 + ... + 205277508.

It is an arithmetic number, because the mean of its divisors is an integer number (478980845).

Almost surely, 2^1642220036 is an apocalyptic number.

It is an amenable number.

1642220036 is a deficient number, since it is larger than the sum of its proper divisors (1231665034).

1642220036 is a wasteful number, since it uses less digits than its factorization.

1642220036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410555013 (or 410555011 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 1642220036 is about 40524.3141336161. The cubic root of 1642220036 is about 1179.8055880038.

Adding to 1642220036 its reverse (6300222461), we get a palindrome (7942442497).

The spelling of 1642220036 in words is "one billion, six hundred forty-two million, two hundred twenty thousand, thirty-six".