1645107112 has 16 divisors (see below), whose sum is σ = 3364992000. Its totient is φ = 747775920.

The previous prime is 1645107067. The next prime is 1645107127. The reversal of 1645107112 is 2117015461.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9347112 + ... + 9347287.

It is an arithmetic number, because the mean of its divisors is an integer number (210312000).

Almost surely, 2^1645107112 is an apocalyptic number.

It is an amenable number.

1645107112 is an abundant number, since it is smaller than the sum of its proper divisors (1719884888).

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

1645107112 is a wasteful number, since it uses less digits than its factorization.

1645107112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18694416 (or 18694412 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 28.

The square root of 1645107112 is about 40559.9200196450. The cubic root of 1645107112 is about 1180.4965620526.

The spelling of 1645107112 in words is "one billion, six hundred forty-five million, one hundred seven thousand, one hundred twelve".