1945099908644 has 12 divisors (see below), whose sum is σ = 3450553948044. Its totient is φ = 959227352064.

The previous prime is 1945099908643. The next prime is 1945099908677. The reversal of 1945099908644 is 4468099905491.

It can be written as a sum of positive squares in 2 ways, for example, as 1466249748544 + 478850160100 = 1210888^2 + 691990^2 .

It is not an unprimeable number, because it can be changed into a prime (1945099908641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3330650237 + ... + 3330650820.

It is an arithmetic number, because the mean of its divisors is an integer number (287546162337).

Almost surely, 2^{1945099908644} is an apocalyptic number.

It is an amenable number.

1945099908644 is a deficient number, since it is larger than the sum of its proper divisors (1505454039400).

1945099908644 is a wasteful number, since it uses less digits than its factorization.

1945099908644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6661301134 (or 6661301132 counting only the distinct ones).

The product of its (nonzero) digits is 100776960, while the sum is 68.

The spelling of 1945099908644 in words is "one trillion, nine hundred forty-five billion, ninety-nine million, nine hundred eight thousand, six hundred forty-four".