1349679220 has 12 divisors (see below), whose sum is σ = 2834326404. Its totient is φ = 539871680.

The previous prime is 1349679217. The next prime is 1349679251. The reversal of 1349679220 is 229769431.

It can be written as a sum of positive squares in 2 ways, for example, as 601328484 + 748350736 = 24522^2 + 27356^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33741961 + ... + 33742000.

It is an arithmetic number, because the mean of its divisors is an integer number (236193867).

Almost surely, 2^1349679220 is an apocalyptic number.

1349679220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1349679220 is an abundant number, since it is smaller than the sum of its proper divisors (1484647184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1349679220 is a wasteful number, since it uses less digits than its factorization.

1349679220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67483970 (or 67483968 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 1349679220 is about 36737.9806195169. The cubic root of 1349679220 is about 1105.1219046115.

The spelling of 1349679220 in words is "one billion, three hundred forty-nine million, six hundred seventy-nine thousand, two hundred twenty".