18196652072 has 32 divisors (see below), whose sum is σ = 34892812800. Its totient is φ = 8894184000.

The previous prime is 18196652063. The next prime is 18196652081. The reversal of 18196652072 is 27025669181.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18196652063) and next prime (18196652081).

It is a super-2 number, since 2×18196652072² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78704 + ... + 206367.

It is an arithmetic number, because the mean of its divisors is an integer number (1090400400).

Almost surely, 2^18196652072 is an apocalyptic number.

It is an amenable number.

18196652072 is a deficient number, since it is larger than the sum of its proper divisors (16696160728).

18196652072 is a wasteful number, since it uses less digits than its factorization.

18196652072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285257 (or 285253 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 47.

The spelling of 18196652072 in words is "eighteen billion, one hundred ninety-six million, six hundred fifty-two thousand, seventy-two".