1678401835 has 16 divisors (see below), whose sum is σ = 2198573280. Its totient is φ = 1219882240.

The previous prime is 1678401833. The next prime is 1678401853. The reversal of 1678401835 is 5381048761.

It is not a de Polignac number, because 1678401835 - 2¹ = 1678401833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1678401791 and 1678401800.

It is not an unprimeable number, because it can be changed into a prime (1678401833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86511 + ... + 104119.

It is an arithmetic number, because the mean of its divisors is an integer number (137410830).

Almost surely, 2^1678401835 is an apocalyptic number.

1678401835 is a deficient number, since it is larger than the sum of its proper divisors (520171445).

1678401835 is a wasteful number, since it uses less digits than its factorization.

1678401835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19358.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 1678401835 is about 40968.3028083908. The cubic root of 1678401835 is about 1188.4073119084.

The spelling of 1678401835 in words is "one billion, six hundred seventy-eight million, four hundred one thousand, eight hundred thirty-five".