1878418349 has 16 divisors (see below), whose sum is σ = 2084175360. Its totient is φ = 1683897600.

The previous prime is 1878418327. The next prime is 1878418351. The reversal of 1878418349 is 9438148781.

It is a happy number.

It is not a de Polignac number, because 1878418349 - 2¹² = 1878414253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1878418349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1878411349) 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, 83399 + ... + 103499.

It is an arithmetic number, because the mean of its divisors is an integer number (130260960).

Almost surely, 2^1878418349 is an apocalyptic number.

It is an amenable number.

1878418349 is a deficient number, since it is larger than the sum of its proper divisors (205757011).

1878418349 is a wasteful number, since it uses less digits than its factorization.

1878418349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20380.

The product of its digits is 1548288, while the sum is 53.

The square root of 1878418349 is about 43340.7239095057. The cubic root of 1878418349 is about 1233.8549487713.

The spelling of 1878418349 in words is "one billion, eight hundred seventy-eight million, four hundred eighteen thousand, three hundred forty-nine".