18630786154 has 8 divisors (see below), whose sum is σ = 27956849508. Its totient is φ = 9311836320.

The previous prime is 18630786127. The next prime is 18630786199. The reversal of 18630786154 is 45168703681.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18538184025 + 92602129 = 136155^2 + 9623^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×18630786154² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18630786098 and 18630786107.

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 3 ways as a sum of consecutive naturals, for example, 1771827 + ... + 1782310.

Almost surely, 2^18630786154 is an apocalyptic number.

18630786154 is a deficient number, since it is larger than the sum of its proper divisors (9326063354).

18630786154 is a wasteful number, since it uses less digits than its factorization.

18630786154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3556760.

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 18630786154 in words is "eighteen billion, six hundred thirty million, seven hundred eighty-six thousand, one hundred fifty-four".