18158436741 has 8 divisors (see below), whose sum is σ = 24801767424. Its totient is φ = 11810365280.

The previous prime is 18158436719. The next prime is 18158436833. The reversal of 18158436741 is 14763485181.

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

It is a cyclic number.

It is not a de Polignac number, because 18158436741 - 2⁷ = 18158436613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18158436701) 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, 73814661 + ... + 73814906.

It is an arithmetic number, because the mean of its divisors is an integer number (3100220928).

Almost surely, 2^18158436741 is an apocalyptic number.

It is an amenable number.

18158436741 is a deficient number, since it is larger than the sum of its proper divisors (6643330683).

18158436741 is a wasteful number, since it uses less digits than its factorization.

18158436741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147629611.

The product of its digits is 645120, while the sum is 48.

The spelling of 18158436741 in words is "eighteen billion, one hundred fifty-eight million, four hundred thirty-six thousand, seven hundred forty-one".