1645430124 has 24 divisors (see below), whose sum is σ = 4134670960. Its totient is φ = 506286144.

The previous prime is 1645430123. The next prime is 1645430141. The reversal of 1645430124 is 4210345461.

It is a junction number, because it is equal to n+sod(n) for n = 1645430091 and 1645430100.

It is not an unprimeable number, because it can be changed into a prime (1645430123) 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 7 ways as a sum of consecutive naturals, for example, 5273659 + ... + 5273970.

Almost surely, 2^1645430124 is an apocalyptic number.

It is an amenable number.

1645430124 is an abundant number, since it is smaller than the sum of its proper divisors (2489240836).

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

1645430124 is a wasteful number, since it uses less digits than its factorization.

1645430124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10547649 (or 10547647 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 1645430124 is about 40563.9017354100. The cubic root of 1645430124 is about 1180.5738193527.

Adding to 1645430124 its reverse (4210345461), we get a palindrome (5855775585).

The spelling of 1645430124 in words is "one billion, six hundred forty-five million, four hundred thirty thousand, one hundred twenty-four".