1645512230 has 16 divisors (see below), whose sum is σ = 3090701664. Its totient is φ = 629587200.

The previous prime is 1645512227. The next prime is 1645512277. The reversal of 1645512230 is 322155461.

It is a junction number, because it is equal to n+sod(n) for n = 1645512193 and 1645512202.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 3576971 + ... + 3577430.

It is an arithmetic number, because the mean of its divisors is an integer number (193168854).

Almost surely, 2^1645512230 is an apocalyptic number.

1645512230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1645512230 is a deficient number, since it is larger than the sum of its proper divisors (1445189434).

1645512230 is a wasteful number, since it uses less digits than its factorization.

1645512230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7154431.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 1645512230 is about 40564.9137802609. The cubic root of 1645512230 is about 1180.5934556736.

Adding to 1645512230 its reverse (322155461), we get a palindrome (1967667691).

The spelling of 1645512230 in words is "one billion, six hundred forty-five million, five hundred twelve thousand, two hundred thirty".