1678116201 has 4 divisors (see below), whose sum is σ = 2237488272. Its totient is φ = 1118744132.

The previous prime is 1678116131. The next prime is 1678116217. The reversal of 1678116201 is 1026118761.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1678116201 - 2⁷ = 1678116073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1678116301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279686031 + ... + 279686036.

It is an arithmetic number, because the mean of its divisors is an integer number (559372068).

Almost surely, 2^1678116201 is an apocalyptic number.

It is an amenable number.

1678116201 is a deficient number, since it is larger than the sum of its proper divisors (559372071).

1678116201 is an equidigital number, since it uses as much as digits as its factorization.

1678116201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559372070.

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 1678116201 is about 40964.8166235368. The cubic root of 1678116201 is about 1188.3398928544.

The spelling of 1678116201 in words is "one billion, six hundred seventy-eight million, one hundred sixteen thousand, two hundred one".