1293432641 has 4 divisors (see below), whose sum is σ = 1369516932. Its totient is φ = 1217348352.

The previous prime is 1293432611. The next prime is 1293432649. The reversal of 1293432641 is 1462343921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1462343921 = 421 ⋅3473501.

It can be written as a sum of positive squares in 2 ways, for example, as 1126273600 + 167159041 = 33560^2 + 12929^2 .

It is a cyclic number.

It is not a de Polignac number, because 1293432641 - 2¹⁸ = 1293170497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1293432649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38042120 + ... + 38042153.

It is an arithmetic number, because the mean of its divisors is an integer number (342379233).

Almost surely, 2^1293432641 is an apocalyptic number.

It is an amenable number.

1293432641 is a deficient number, since it is larger than the sum of its proper divisors (76084291).

1293432641 is an equidigital number, since it uses as much as digits as its factorization.

1293432641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76084290.

The product of its digits is 31104, while the sum is 35.

The square root of 1293432641 is about 35964.3245592073. The cubic root of 1293432641 is about 1089.5519413675.

The spelling of 1293432641 in words is "one billion, two hundred ninety-three million, four hundred thirty-two thousand, six hundred forty-one".