1328956654 has 4 divisors (see below), whose sum is σ = 1993434984. Its totient is φ = 664478326.

The previous prime is 1328956627. The next prime is 1328956661. The reversal of 1328956654 is 4566598231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4566598231 = 13 ⋅351276787.

It is a super-2 number, since 2×1328956654² = 3532251576421751432, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1328956598 and 1328956607.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 332239162 + ... + 332239165.

It is an arithmetic number, because the mean of its divisors is an integer number (498358746).

Almost surely, 2^1328956654 is an apocalyptic number.

1328956654 is a deficient number, since it is larger than the sum of its proper divisors (664478330).

1328956654 is an equidigital number, since it uses as much as digits as its factorization.

1328956654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664478329.

The product of its digits is 1555200, while the sum is 49.

The square root of 1328956654 is about 36454.8577558602. The cubic root of 1328956654 is about 1099.4368064633.

The spelling of 1328956654 in words is "one billion, three hundred twenty-eight million, nine hundred fifty-six thousand, six hundred fifty-four".