1945855163 has 8 divisors (see below), whose sum is σ = 2224105728. Its totient is φ = 1667672424.

The previous prime is 1945855147. The next prime is 1945855199. The reversal of 1945855163 is 3615585491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1945855163 - 2⁴ = 1945855147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1945855133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87170 + ... + 107192.

It is an arithmetic number, because the mean of its divisors is an integer number (278013216).

Almost surely, 2^1945855163 is an apocalyptic number.

1945855163 is a deficient number, since it is larger than the sum of its proper divisors (278250565).

1945855163 is a wasteful number, since it uses less digits than its factorization.

1945855163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33913.

The product of its digits is 648000, while the sum is 47.

The square root of 1945855163 is about 44111.8483289921. The cubic root of 1945855163 is about 1248.4471732220.

The spelling of 1945855163 in words is "one billion, nine hundred forty-five million, eight hundred fifty-five thousand, one hundred sixty-three".