185166683428 has 6 divisors (see below), whose sum is σ = 324041696006. Its totient is φ = 92583341712.

The previous prime is 185166683419. The next prime is 185166683491. The reversal of 185166683428 is 824386661581.

It is a happy number.

185166683428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 154887899364 + 30278784064 = 393558^2 + 174008^2 .

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 as a sum of consecutive naturals, namely, 23145835425 + ... + 23145835432.

Almost surely, 2^185166683428 is an apocalyptic number.

It is an amenable number.

185166683428 is a deficient number, since it is larger than the sum of its proper divisors (138875012578).

185166683428 is a wasteful number, since it uses less digits than its factorization.

185166683428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46291670861 (or 46291670859 counting only the distinct ones).

The product of its digits is 13271040, while the sum is 58.

The spelling of 185166683428 in words is "one hundred eighty-five billion, one hundred sixty-six million, six hundred eighty-three thousand, four hundred twenty-eight".