1645712114 has 16 divisors (see below), whose sum is σ = 2478130200. Its totient is φ = 819675264.

The previous prime is 1645712069. The next prime is 1645712143. The reversal of 1645712114 is 4112175461.

It can be written as a sum of positive squares in 4 ways, for example, as 1622720089 + 22992025 = 40283^2 + 4795^2 .

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, 1004504 + ... + 1006140.

Almost surely, 2^1645712114 is an apocalyptic number.

1645712114 is a deficient number, since it is larger than the sum of its proper divisors (832418086).

1645712114 is a wasteful number, since it uses less digits than its factorization.

1645712114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3277.

The product of its digits is 6720, while the sum is 32.

The square root of 1645712114 is about 40567.3774602204. The cubic root of 1645712114 is about 1180.6412568351.

Adding to 1645712114 its reverse (4112175461), we get a palindrome (5757887575).

The spelling of 1645712114 in words is "one billion, six hundred forty-five million, seven hundred twelve thousand, one hundred fourteen".