1868049279 has 6 divisors (see below), whose sum is σ = 2698293416. Its totient is φ = 1245366180.

The previous prime is 1868049269. The next prime is 1868049317. The reversal of 1868049279 is 9729408681.

1868049279 is a `hidden beast` number, since 1 + 8 + 6 + 80 + 492 + 79 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-1868049279 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 (1868049269) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 103780507 + ... + 103780524.

Almost surely, 2^1868049279 is an apocalyptic number.

1868049279 is a deficient number, since it is larger than the sum of its proper divisors (830244137).

1868049279 is a wasteful number, since it uses less digits than its factorization.

1868049279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207561037 (or 207561034 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The square root of 1868049279 is about 43220.9356562303. The cubic root of 1868049279 is about 1231.5804213591.

The spelling of 1868049279 in words is "one billion, eight hundred sixty-eight million, forty-nine thousand, two hundred seventy-nine".