18406017754 has 4 divisors (see below), whose sum is σ = 27609026634. Its totient is φ = 9203008876.

The previous prime is 18406017737. The next prime is 18406017767. The reversal of 18406017754 is 45771060481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45771060481 = 43 ⋅1064443267.

It can be written as a sum of positive squares in only one way, i.e., 14564869225 + 3841148529 = 120685^2 + 61977^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18406017754.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4601504437 + ... + 4601504440.

Almost surely, 2^18406017754 is an apocalyptic number.

18406017754 is a deficient number, since it is larger than the sum of its proper divisors (9203008880).

18406017754 is an equidigital number, since it uses as much as digits as its factorization.

18406017754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9203008879.

The product of its (nonzero) digits is 188160, while the sum is 43.

The spelling of 18406017754 in words is "eighteen billion, four hundred six million, seventeen thousand, seven hundred fifty-four".