1645201314 has 32 divisors (see below), whose sum is σ = 3657363840. Its totient is φ = 548196336.

The previous prime is 1645201277. The next prime is 1645201357. The reversal of 1645201314 is 4131025461.

It is a happy number.

1645201314 is a `hidden beast` number, since 1 + 6 + 4 + 520 + 131 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232659 + ... + 239625.

It is an arithmetic number, because the mean of its divisors is an integer number (114292620).

Almost surely, 2^1645201314 is an apocalyptic number.

1645201314 is an abundant number, since it is smaller than the sum of its proper divisors (2012162526).

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

1645201314 is a wasteful number, since it uses less digits than its factorization.

1645201314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11351 (or 11345 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1645201314 is about 40561.0812725696. The cubic root of 1645201314 is about 1180.5190941244.

Adding to 1645201314 its reverse (4131025461), we get a palindrome (5776226775).

The spelling of 1645201314 in words is "one billion, six hundred forty-five million, two hundred one thousand, three hundred fourteen".