18952980485 has 32 divisors (see below), whose sum is σ = 24214606560. Its totient is φ = 14191828992.

The previous prime is 18952980481. The next prime is 18952980521. The reversal of 18952980485 is 58408925981.

It can be written as a sum of positive squares in 16 ways, for example, as 1774684129 + 17178296356 = 42127^2 + 131066^2 .

It is a cyclic number.

It is not a de Polignac number, because 18952980485 - 2² = 18952980481 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18952980481) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15420851 + ... + 15422079.

It is an arithmetic number, because the mean of its divisors is an integer number (756706455).

Almost surely, 2^18952980485 is an apocalyptic number.

It is an amenable number.

18952980485 is a deficient number, since it is larger than the sum of its proper divisors (5261626075).

18952980485 is a wasteful number, since it uses less digits than its factorization.

18952980485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105.

The product of its (nonzero) digits is 8294400, while the sum is 59.

The spelling of 18952980485 in words is "eighteen billion, nine hundred fifty-two million, nine hundred eighty thousand, four hundred eighty-five".