1348531957 has 4 divisors (see below), whose sum is σ = 1350732460. Its totient is φ = 1346331456.

The previous prime is 1348531949. The next prime is 1348531967. The reversal of 1348531957 is 7591358431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7591358431 = 131 ⋅57949301.

It can be written as a sum of positive squares in 2 ways, for example, as 38019556 + 1310512401 = 6166^2 + 36201^2 .

It is a cyclic number.

It is not a de Polignac number, because 1348531957 - 2³ = 1348531949 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 (1348531937) 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, 1099332 + ... + 1100557.

It is an arithmetic number, because the mean of its divisors is an integer number (337683115).

Almost surely, 2^1348531957 is an apocalyptic number.

It is an amenable number.

1348531957 is a deficient number, since it is larger than the sum of its proper divisors (2200503).

1348531957 is an equidigital number, since it uses as much as digits as its factorization.

1348531957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2200502.

The product of its digits is 453600, while the sum is 46.

The square root of 1348531957 is about 36722.3631728678. The cubic root of 1348531957 is about 1104.8086882407.

The spelling of 1348531957 in words is "one billion, three hundred forty-eight million, five hundred thirty-one thousand, nine hundred fifty-seven".