1337736734681 has 4 divisors (see below), whose sum is σ = 1347501236532. Its totient is φ = 1327972232832.

The previous prime is 1337736734647. The next prime is 1337736734687. The reversal of 1337736734681 is 1864376377331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1016719305625 + 321017429056 = 1008325^2 + 566584^2 .

It is a cyclic number.

It is not a de Polignac number, because 1337736734681 - 2²² = 1337732540377 is a prime.

It is a super-2 number, since 2×1337736734681² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1337736734681.

It is not an unprimeable number, because it can be changed into a prime (1337736734687) 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, 4882250720 + ... + 4882250993.

It is an arithmetic number, because the mean of its divisors is an integer number (336875309133).

Almost surely, 2^{1337736734681} is an apocalyptic number.

It is an amenable number.

1337736734681 is a deficient number, since it is larger than the sum of its proper divisors (9764501851).

1337736734681 is an equidigital number, since it uses as much as digits as its factorization.

1337736734681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9764501850.

The product of its digits is 32006016, while the sum is 59.

The spelling of 1337736734681 in words is "one trillion, three hundred thirty-seven billion, seven hundred thirty-six million, seven hundred thirty-four thousand, six hundred eighty-one".