1949447679 has 8 divisors (see below), whose sum is σ = 2683110912. Its totient is φ = 1257708120.

The previous prime is 1949447677. The next prime is 1949447693. The reversal of 1949447679 is 9767449491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1949447679 - 2¹ = 1949447677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1949447677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10480809 + ... + 10480994.

It is an arithmetic number, because the mean of its divisors is an integer number (335388864).

Almost surely, 2^1949447679 is an apocalyptic number.

1949447679 is a deficient number, since it is larger than the sum of its proper divisors (733663233).

1949447679 is a wasteful number, since it uses less digits than its factorization.

1949447679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20961837.

The product of its digits is 13716864, while the sum is 60.

The square root of 1949447679 is about 44152.5500849045. The cubic root of 1949447679 is about 1249.2150119916.

The spelling of 1949447679 in words is "one billion, nine hundred forty-nine million, four hundred forty-seven thousand, six hundred seventy-nine".