1337396561 has 8 divisors (see below), whose sum is σ = 1374705024. Its totient is φ = 1300149360.

The previous prime is 1337396549. The next prime is 1337396569. The reversal of 1337396561 is 1656937331.

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

It is a cyclic number.

It is not a de Polignac number, because 1337396561 - 2²² = 1333202257 is a prime.

It is a super-2 number, since 2×1337396561² = 3577259122749253442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1337396569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30866 + ... + 60228.

It is an arithmetic number, because the mean of its divisors is an integer number (171838128).

Almost surely, 2^1337396561 is an apocalyptic number.

It is an amenable number.

1337396561 is a deficient number, since it is larger than the sum of its proper divisors (37308463).

1337396561 is a wasteful number, since it uses less digits than its factorization.

1337396561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30631.

The product of its digits is 306180, while the sum is 44.

The square root of 1337396561 is about 36570.4328795818. The cubic root of 1337396561 is about 1101.7593226834.

The spelling of 1337396561 in words is "one billion, three hundred thirty-seven million, three hundred ninety-six thousand, five hundred sixty-one".