1945904543829 has 24 divisors (see below), whose sum is σ = 2878636853664. Its totient is φ = 1266262452000.

The previous prime is 1945904543801. The next prime is 1945904543831. The reversal of 1945904543829 is 9283454095491.

1945904543829 is a `hidden beast` number, since 1 + 9 + 4 + 5 + 9 + 0 + 4 + 543 + 82 + 9 = 666.

It is not a de Polignac number, because 1945904543829 - 2⁵ = 1945904543797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1945904543629) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13456527 + ... + 13600364.

It is an arithmetic number, because the mean of its divisors is an integer number (119943202236).

Almost surely, 2^{1945904543829} is an apocalyptic number.

It is an amenable number.

1945904543829 is a deficient number, since it is larger than the sum of its proper divisors (932732309835).

1945904543829 is a wasteful number, since it uses less digits than its factorization.

1945904543829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27057089 (or 27057086 counting only the distinct ones).

The product of its (nonzero) digits is 55987200, while the sum is 63.

The spelling of 1945904543829 in words is "one trillion, nine hundred forty-five billion, nine hundred four million, five hundred forty-three thousand, eight hundred twenty-nine".