1330605641 has 4 divisors (see below), whose sum is σ = 1331791632. Its totient is φ = 1329419652.

The previous prime is 1330605607. The next prime is 1330605643. The reversal of 1330605641 is 1465060331.

It is a happy number.

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: 1465060331 = 7 ⋅209294333.

It is a cyclic number.

It is not a de Polignac number, because 1330605641 - 2¹⁰ = 1330604617 is a prime.

It is a super-2 number, since 2×1330605641² = 3541022743722041762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1330605643) 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, 591311 + ... + 593556.

It is an arithmetic number, because the mean of its divisors is an integer number (332947908).

Almost surely, 2^1330605641 is an apocalyptic number.

It is an amenable number.

1330605641 is a deficient number, since it is larger than the sum of its proper divisors (1185991).

1330605641 is a wasteful number, since it uses less digits than its factorization.

1330605641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185990.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 1330605641 is about 36477.4675793153. The cubic root of 1330605641 is about 1099.8913504258.

Adding to 1330605641 its reverse (1465060331), we get a palindrome (2795665972).

The spelling of 1330605641 in words is "one billion, three hundred thirty million, six hundred five thousand, six hundred forty-one".