1337968405 has 4 divisors (see below), whose sum is σ = 1605562092. Its totient is φ = 1070374720.

The previous prime is 1337968393. The next prime is 1337968409. The reversal of 1337968405 is 5048697331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5048697331 = 27539 ⋅183329.

It can be written as a sum of positive squares in 2 ways, for example, as 922093956 + 415874449 = 30366^2 + 20393^2 .

It is not a de Polignac number, because 1337968405 - 2¹³ = 1337960213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1337968409) 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, 133796836 + ... + 133796845.

It is an arithmetic number, because the mean of its divisors is an integer number (401390523).

Almost surely, 2^1337968405 is an apocalyptic number.

It is an amenable number.

1337968405 is a deficient number, since it is larger than the sum of its proper divisors (267593687).

1337968405 is an equidigital number, since it uses as much as digits as its factorization.

1337968405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267593686.

The product of its (nonzero) digits is 544320, while the sum is 46.

The square root of 1337968405 is about 36578.2504365641. The cubic root of 1337968405 is about 1101.9163303855.

The spelling of 1337968405 in words is "one billion, three hundred thirty-seven million, nine hundred sixty-eight thousand, four hundred five".