1338671560 has 16 divisors (see below), whose sum is σ = 3012011100. Its totient is φ = 535468608.

The previous prime is 1338671557. The next prime is 1338671569. The reversal of 1338671560 is 651768331.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1256986116 + 81685444 = 35454^2 + 9038^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 33466789 = 1338671560 / (1 + 3 + 3 + 8 + 6 + 7 + 1 + 5 + 6 + 0).

It is not an unprimeable number, because it can be changed into a prime (1338671569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16733355 + ... + 16733434.

Almost surely, 2^1338671560 is an apocalyptic number.

1338671560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1338671560 is an abundant number, since it is smaller than the sum of its proper divisors (1673339540).

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

1338671560 is a wasteful number, since it uses less digits than its factorization.

1338671560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33466800 (or 33466796 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 1338671560 is about 36587.8608284223. The cubic root of 1338671560 is about 1102.1093300313.

The spelling of 1338671560 in words is "one billion, three hundred thirty-eight million, six hundred seventy-one thousand, five hundred sixty".