18750491954 has 16 divisors (see below), whose sum is σ = 28671705816. Its totient is φ = 9194169600.

The previous prime is 18750491843. The next prime is 18750491983. The reversal of 18750491954 is 45919405781.

It can be written as a sum of positive squares in 4 ways, for example, as 8483331025 + 10267160929 = 92105^2 + 101327^2 .

It is a super-3 number, since 3×18750491954³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18750491896 and 18750491905.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186917 + ... + 269144.

Almost surely, 2^18750491954 is an apocalyptic number.

18750491954 is a deficient number, since it is larger than the sum of its proper divisors (9921213862).

18750491954 is a wasteful number, since it uses less digits than its factorization.

18750491954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456461.

The product of its (nonzero) digits is 1814400, while the sum is 53.

The spelling of 18750491954 in words is "eighteen billion, seven hundred fifty million, four hundred ninety-one thousand, nine hundred fifty-four".