2154957963 has 16 divisors (see below), whose sum is σ = 2984180736. Its totient is φ = 1381756320.

The previous prime is 2154957923. The next prime is 2154957983. The reversal of 2154957963 is 3697594512.

It is not a de Polignac number, because 2154957963 - 2¹⁰ = 2154956939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2154957923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55920 + ... + 86237.

It is an arithmetic number, because the mean of its divisors is an integer number (186511296).

Almost surely, 2^2154957963 is an apocalyptic number.

2154957963 is a deficient number, since it is larger than the sum of its proper divisors (829222773).

2154957963 is a wasteful number, since it uses less digits than its factorization.

2154957963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142354.

The product of its digits is 2041200, while the sum is 51.

The square root of 2154957963 is about 46421.5247810754. The cubic root of 2154957963 is about 1291.6542211847.

The spelling of 2154957963 in words is "two billion, one hundred fifty-four million, nine hundred fifty-seven thousand, nine hundred sixty-three".