1346661633 has 4 divisors (see below), whose sum is σ = 1795548848. Its totient is φ = 897774420.

The previous prime is 1346661629. The next prime is 1346661643. The reversal of 1346661633 is 3361666431.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3361666431 = 3 ⋅1120555477.

It is not a de Polignac number, because 1346661633 - 2² = 1346661629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1346661591 and 1346661600.

It is not an unprimeable number, because it can be changed into a prime (1346661643) 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, 224443603 + ... + 224443608.

It is an arithmetic number, because the mean of its divisors is an integer number (448887212).

Almost surely, 2^1346661633 is an apocalyptic number.

It is an amenable number.

1346661633 is a deficient number, since it is larger than the sum of its proper divisors (448887215).

1346661633 is an equidigital number, since it uses as much as digits as its factorization.

1346661633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448887214.

The product of its digits is 139968, while the sum is 39.

The square root of 1346661633 is about 36696.8886010790. Note that the first 3 decimals coincide. The cubic root of 1346661633 is about 1104.2976865726.

The spelling of 1346661633 in words is "one billion, three hundred forty-six million, six hundred sixty-one thousand, six hundred thirty-three".