1645282292 has 6 divisors (see below), whose sum is σ = 2879244018. Its totient is φ = 822641144.

The previous prime is 1645282291. The next prime is 1645282307. The reversal of 1645282292 is 2922825461.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1114624996 + 530657296 = 33386^2 + 23036^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1645282291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205660283 + ... + 205660290.

It is an arithmetic number, because the mean of its divisors is an integer number (479874003).

Almost surely, 2^1645282292 is an apocalyptic number.

It is an amenable number.

1645282292 is a deficient number, since it is larger than the sum of its proper divisors (1233961726).

1645282292 is a wasteful number, since it uses less digits than its factorization.

1645282292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411320577 (or 411320575 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 1645282292 is about 40562.0794831823. The cubic root of 1645282292 is about 1180.5384624748.

The spelling of 1645282292 in words is "one billion, six hundred forty-five million, two hundred eighty-two thousand, two hundred ninety-two".