18936969154 has 16 divisors (see below), whose sum is σ = 30085972128. Its totient is φ = 8908667712.

The previous prime is 18936969131. The next prime is 18936969167. The reversal of 18936969154 is 45196963981.

It is a junction number, because it is equal to n+sod(n) for n = 18936969092 and 18936969101.

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, 20977 + ... + 195739.

It is an arithmetic number, because the mean of its divisors is an integer number (1880373258).

Almost surely, 2^18936969154 is an apocalyptic number.

18936969154 is a deficient number, since it is larger than the sum of its proper divisors (11149002974).

18936969154 is a wasteful number, since it uses less digits than its factorization.

18936969154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177969.

The product of its digits is 12597120, while the sum is 61.

The spelling of 18936969154 in words is "eighteen billion, nine hundred thirty-six million, nine hundred sixty-nine thousand, one hundred fifty-four".