1678332101 has 4 divisors (see below), whose sum is σ = 1705845804. Its totient is φ = 1650818400.

The previous prime is 1678332083. The next prime is 1678332137. The reversal of 1678332101 is 1012338761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1012338761 = 7 ⋅144619823.

It can be written as a sum of positive squares in 2 ways, for example, as 708943876 + 969388225 = 26626^2 + 31135^2 .

It is a cyclic number.

It is not a de Polignac number, because 1678332101 - 2⁶ = 1678332037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1678632101) 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, 13756760 + ... + 13756881.

It is an arithmetic number, because the mean of its divisors is an integer number (426461451).

Almost surely, 2^1678332101 is an apocalyptic number.

It is an amenable number.

1678332101 is a deficient number, since it is larger than the sum of its proper divisors (27513703).

1678332101 is an equidigital number, since it uses as much as digits as its factorization.

1678332101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27513702.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 1678332101 is about 40967.4517269503. The cubic root of 1678332101 is about 1188.3908530880.

It can be divided in two parts, 16783 and 32101, that added together give a palindrome (48884).

The spelling of 1678332101 in words is "one billion, six hundred seventy-eight million, three hundred thirty-two thousand, one hundred one".