18393241377 has 96 divisors (see below), whose sum is σ = 30047846400. Its totient is φ = 9966983040.

The previous prime is 18393241309. The next prime is 18393241393. The reversal of 18393241377 is 77314239381.

It is not a de Polignac number, because 18393241377 - 2⁸ = 18393241121 is a prime.

It is a super-2 number, since 2×18393241377² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18393241577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 69936148 + ... + 69936410.

It is an arithmetic number, because the mean of its divisors is an integer number (312998400).

Almost surely, 2^18393241377 is an apocalyptic number.

It is an amenable number.

18393241377 is a deficient number, since it is larger than the sum of its proper divisors (11654605023).

18393241377 is a wasteful number, since it uses less digits than its factorization.

18393241377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563 (or 556 counting only the distinct ones).

The product of its digits is 762048, while the sum is 48.

The spelling of 18393241377 in words is "eighteen billion, three hundred ninety-three million, two hundred forty-one thousand, three hundred seventy-seven".