1330497957 has 4 divisors (see below), whose sum is σ = 1773997280. Its totient is φ = 886998636.

The previous prime is 1330497937. The next prime is 1330497977. The reversal of 1330497957 is 7597940331.

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: 7597940331 = 3 ⋅2532646777.

It is an interprime number because it is at equal distance from previous prime (1330497937) and next prime (1330497977).

It is not a de Polignac number, because 1330497957 - 2⁷ = 1330497829 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 (1330497937) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 221749657 + ... + 221749662.

It is an arithmetic number, because the mean of its divisors is an integer number (443499320).

Almost surely, 2^1330497957 is an apocalyptic number.

It is an amenable number.

1330497957 is a deficient number, since it is larger than the sum of its proper divisors (443499323).

1330497957 is an equidigital number, since it uses as much as digits as its factorization.

1330497957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443499322.

The product of its (nonzero) digits is 714420, while the sum is 48.

The square root of 1330497957 is about 36475.9915149678. The cubic root of 1330497957 is about 1099.8616787506.

The spelling of 1330497957 in words is "one billion, three hundred thirty million, four hundred ninety-seven thousand, nine hundred fifty-seven".