18196413975 has 36 divisors (see below), whose sum is σ = 33386738112. Its totient is φ = 9468048000.

The previous prime is 18196413973. The next prime is 18196414031. The reversal of 18196413975 is 57931469181.

It is not a de Polignac number, because 18196413975 - 2¹ = 18196413973 is a prime.

It is a super-2 number, since 2×18196413975² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18196413971) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 977031 + ... + 995480.

It is an arithmetic number, because the mean of its divisors is an integer number (927409392).

Almost surely, 2^18196413975 is an apocalyptic number.

18196413975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18196413975 is a deficient number, since it is larger than the sum of its proper divisors (15190324137).

18196413975 is a wasteful number, since it uses less digits than its factorization.

18196413975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972568 (or 1972560 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 54.

The spelling of 18196413975 in words is "eighteen billion, one hundred ninety-six million, four hundred thirteen thousand, nine hundred seventy-five".