178061049 has 12 divisors (see below), whose sum is σ = 257417316. Its totient is φ = 118606752.

The previous prime is 178061017. The next prime is 178061083. The reversal of 178061049 is 940160871.

It can be written as a sum of positive squares in 2 ways, for example, as 53582400 + 124478649 = 7320^2 + 11157^2 .

It is not a de Polignac number, because 178061049 - 2⁵ = 178061017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (178061099) 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 11 ways as a sum of consecutive naturals, for example, 3747 + ... + 19239.

It is an arithmetic number, because the mean of its divisors is an integer number (21451443).

Almost surely, 2^178061049 is an apocalyptic number.

It is an amenable number.

178061049 is a deficient number, since it is larger than the sum of its proper divisors (79356267).

178061049 is a wasteful number, since it uses less digits than its factorization.

178061049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16776 (or 16773 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 178061049 is about 13343.9517759920. The cubic root of 178061049 is about 562.5869353041.

The spelling of 178061049 in words is "one hundred seventy-eight million, sixty-one thousand, forty-nine".