1642433136 has 40 divisors (see below), whose sum is σ = 4245990144. Its totient is φ = 547085760.

The previous prime is 1642433101. The next prime is 1642433137. The reversal of 1642433136 is 6313342461.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1642433097 and 1642433106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642433137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59871 + ... + 82881.

Almost surely, 2^1642433136 is an apocalyptic number.

1642433136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1642433136 is an abundant number, since it is smaller than the sum of its proper divisors (2603557008).

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

1642433136 is a wasteful number, since it uses less digits than its factorization.

1642433136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24509 (or 24503 counting only the distinct ones).

The product of its digits is 31104, while the sum is 33.

The square root of 1642433136 is about 40526.9433340340. The cubic root of 1642433136 is about 1179.8566176448.

Adding to 1642433136 its reverse (6313342461), we get a palindrome (7955775597).

It can be divided in two parts, 1642 and 433136, that added together give a triangular number (434778 = T₉₃₂).

The spelling of 1642433136 in words is "one billion, six hundred forty-two million, four hundred thirty-three thousand, one hundred thirty-six".