1645543130 has 96 divisors (see below), whose sum is σ = 3745671552. Its totient is φ = 509477760.

The previous prime is 1645543129. The next prime is 1645543157. The reversal of 1645543130 is 313455461.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1464749 + ... + 1465871.

It is an arithmetic number, because the mean of its divisors is an integer number (39017412).

Almost surely, 2^1645543130 is an apocalyptic number.

1645543130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1645543130 is an abundant number, since it is smaller than the sum of its proper divisors (2100128422).

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

1645543130 is a wasteful number, since it uses less digits than its factorization.

1645543130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332 (or 1321 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 1645543130 is about 40565.2946494907. The cubic root of 1645543130 is about 1180.6008454919.

Adding to 1645543130 its reverse (313455461), we get a palindrome (1958998591).

It can be divided in two parts, 16455431 and 30, that added together give a palindrome (16455461).

The spelling of 1645543130 in words is "one billion, six hundred forty-five million, five hundred forty-three thousand, one hundred thirty".