2143692554 has 16 divisors (see below), whose sum is σ = 3415582728. Its totient is φ = 1005568512.

The previous prime is 2143692553. The next prime is 2143692619. The reversal of 2143692554 is 4552963412.

It can be written as a sum of positive squares in 4 ways, for example, as 1168067329 + 975625225 = 34177^2 + 31235^2 .

It is not an unprimeable number, because it can be changed into a prime (2143692553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90077 + ... + 111360.

Almost surely, 2^2143692554 is an apocalyptic number.

2143692554 is a deficient number, since it is larger than the sum of its proper divisors (1271890174).

2143692554 is a wasteful number, since it uses less digits than its factorization.

2143692554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201769.

The product of its digits is 259200, while the sum is 41.

The square root of 2143692554 is about 46300.0275809853. The cubic root of 2143692554 is about 1289.3995069860.

The spelling of 2143692554 in words is "two billion, one hundred forty-three million, six hundred ninety-two thousand, five hundred fifty-four".