1645232214 has 16 divisors (see below), whose sum is σ = 3321217728. Its totient is φ = 543285192.

The previous prime is 1645232207. The next prime is 1645232221. The reversal of 1645232214 is 4122325461.

It is an interprime number because it is at equal distance from previous prime (1645232207) and next prime (1645232221).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1280692 + ... + 1281975.

It is an arithmetic number, because the mean of its divisors is an integer number (207576108).

Almost surely, 2^1645232214 is an apocalyptic number.

1645232214 is an abundant number, since it is smaller than the sum of its proper divisors (1675985514).

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

1645232214 is a wasteful number, since it uses less digits than its factorization.

1645232214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2562779.

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

The square root of 1645232214 is about 40561.4621777864. The cubic root of 1645232214 is about 1180.5264848737.

Adding to 1645232214 its reverse (4122325461), we get a palindrome (5767557675).

The spelling of 1645232214 in words is "one billion, six hundred forty-five million, two hundred thirty-two thousand, two hundred fourteen".