1645195084 has 48 divisors (see below), whose sum is σ = 3209909248. Its totient is φ = 732872448.

The previous prime is 1645195081. The next prime is 1645195091. The reversal of 1645195084 is 4805915461.

It is a self number, because there is not a number n which added to its sum of digits gives 1645195084.

It is not an unprimeable number, because it can be changed into a prime (1645195081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240982 + ... + 247714.

Almost surely, 2^1645195084 is an apocalyptic number.

It is an amenable number.

1645195084 is a deficient number, since it is larger than the sum of its proper divisors (1564714164).

1645195084 is a wasteful number, since it uses less digits than its factorization.

1645195084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6914 (or 6912 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 1645195084 is about 40561.0044747415. The cubic root of 1645195084 is about 1180.5176040041.

The spelling of 1645195084 in words is "one billion, six hundred forty-five million, one hundred ninety-five thousand, eighty-four".