18910454354 has 16 divisors (see below), whose sum is σ = 31699122336. Its totient is φ = 8386010400.

The previous prime is 18910454351. The next prime is 18910454359. The reversal of 18910454354 is 45345401981.

It is not an unprimeable number, because it can be changed into a prime (18910454351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10481612 + ... + 10483415.

It is an arithmetic number, because the mean of its divisors is an integer number (1981195146).

Almost surely, 2^18910454354 is an apocalyptic number.

18910454354 is a deficient number, since it is larger than the sum of its proper divisors (12788667982).

18910454354 is a wasteful number, since it uses less digits than its factorization.

18910454354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20965081.

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 18910454354 in words is "eighteen billion, nine hundred ten million, four hundred fifty-four thousand, three hundred fifty-four".