18819541654 has 16 divisors (see below), whose sum is σ = 30104902800. Its totient is φ = 8792538624.

The previous prime is 18819541537. The next prime is 18819541679. The reversal of 18819541654 is 45614591881.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1986339 + ... + 1995790.

It is an arithmetic number, because the mean of its divisors is an integer number (1881556425).

Almost surely, 2^18819541654 is an apocalyptic number.

18819541654 is a deficient number, since it is larger than the sum of its proper divisors (11285361146).

18819541654 is a wasteful number, since it uses less digits than its factorization.

18819541654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3982287.

The product of its digits is 1382400, while the sum is 52.

The spelling of 18819541654 in words is "eighteen billion, eight hundred nineteen million, five hundred forty-one thousand, six hundred fifty-four".