2143115554 has 16 divisors (see below), whose sum is σ = 3306780216. Its totient is φ = 1040947200.

The previous prime is 2143115549. The next prime is 2143115563. The reversal of 2143115554 is 4555113412.

It can be written as a sum of positive squares in 4 ways, for example, as 2040599929 + 102515625 = 45173^2 + 10125^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24844 + ... + 70024.

Almost surely, 2^2143115554 is an apocalyptic number.

2143115554 is a deficient number, since it is larger than the sum of its proper divisors (1163664662).

2143115554 is a wasteful number, since it uses less digits than its factorization.

2143115554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45861.

The product of its digits is 12000, while the sum is 31.

The square root of 2143115554 is about 46293.7960638356. The cubic root of 2143115554 is about 1289.2838109370.

Adding to 2143115554 its reverse (4555113412), we get a palindrome (6698228966).

The spelling of 2143115554 in words is "two billion, one hundred forty-three million, one hundred fifteen thousand, five hundred fifty-four".