1336654961 has 4 divisors (see below), whose sum is σ = 1338204672. Its totient is φ = 1335105252.

The previous prime is 1336654927. The next prime is 1336654967. The reversal of 1336654961 is 1694566331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1336654961 - 2¹⁰ = 1336653937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1336654967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 773561 + ... + 775286.

It is an arithmetic number, because the mean of its divisors is an integer number (334551168).

Almost surely, 2^1336654961 is an apocalyptic number.

It is an amenable number.

1336654961 is a deficient number, since it is larger than the sum of its proper divisors (1549711).

1336654961 is an equidigital number, since it uses as much as digits as its factorization.

1336654961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549710.

The product of its digits is 349920, while the sum is 44.

The square root of 1336654961 is about 36560.2921350473. The cubic root of 1336654961 is about 1101.5556394460. Note that the first 3 decimals are identical.

The spelling of 1336654961 in words is "one billion, three hundred thirty-six million, six hundred fifty-four thousand, nine hundred sixty-one".