1645308822 has 16 divisors (see below), whose sum is σ = 3379553712. Its totient is φ = 533613600.

The previous prime is 1645308793. The next prime is 1645308827. The reversal of 1645308822 is 2288035461.

It is a super-2 number, since 2×1645308822² = 5414082239502055368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1645308827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3705429 + ... + 3705872.

It is an arithmetic number, because the mean of its divisors is an integer number (211222107).

Almost surely, 2^1645308822 is an apocalyptic number.

1645308822 is an abundant number, since it is smaller than the sum of its proper divisors (1734244890).

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

1645308822 is a wasteful number, since it uses less digits than its factorization.

1645308822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7411343.

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 1645308822 is about 40562.4065114485. The cubic root of 1645308822 is about 1180.5448077926.

The spelling of 1645308822 in words is "one billion, six hundred forty-five million, three hundred eight thousand, eight hundred twenty-two".