18454851943 has 32 divisors (see below), whose sum is σ = 21725452800. Its totient is φ = 15499123200.

The previous prime is 18454851937. The next prime is 18454851949. The reversal of 18454851943 is 34915845481.

It is an interprime number because it is at equal distance from previous prime (18454851937) and next prime (18454851949).

It is not a de Polignac number, because 18454851943 - 2²⁵ = 18421297511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18454851949) 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, 1351078 + ... + 1364668.

It is an arithmetic number, because the mean of its divisors is an integer number (678920400).

Almost surely, 2^18454851943 is an apocalyptic number.

18454851943 is a deficient number, since it is larger than the sum of its proper divisors (3270600857).

18454851943 is a wasteful number, since it uses less digits than its factorization.

18454851943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13783.

The product of its digits is 2764800, while the sum is 52.

The spelling of 18454851943 in words is "eighteen billion, four hundred fifty-four million, eight hundred fifty-one thousand, nine hundred forty-three".