1945000207563 has 64 divisors (see below), whose sum is σ = 3184137600000. Its totient is φ = 1052711396352.

The previous prime is 1945000207529. The next prime is 1945000207597. The reversal of 1945000207563 is 3657020005491.

It is an interprime number because it is at equal distance from previous prime (1945000207529) and next prime (1945000207597).

It is not a de Polignac number, because 1945000207563 - 2¹⁶ = 1945000142027 is a prime.

It is a super-2 number, since 2×1945000207563² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1945000207463) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 143673531 + ... + 143687067.

It is an arithmetic number, because the mean of its divisors is an integer number (49752150000).

Almost surely, 2^{1945000207563} is an apocalyptic number.

1945000207563 is a deficient number, since it is larger than the sum of its proper divisors (1239137392437).

1945000207563 is a wasteful number, since it uses less digits than its factorization.

1945000207563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20929 (or 20915 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 42.

The spelling of 1945000207563 in words is "one trillion, nine hundred forty-five billion, two hundred seven thousand, five hundred sixty-three".