1296528401 has 4 divisors (see below), whose sum is σ = 1481746752. Its totient is φ = 1111310052.

The previous prime is 1296528367. The next prime is 1296528413. The reversal of 1296528401 is 1048256921.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1296528401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1296528421) 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, 92609165 + ... + 92609178.

It is an arithmetic number, because the mean of its divisors is an integer number (370436688).

Almost surely, 2^1296528401 is an apocalyptic number.

It is an amenable number.

1296528401 is a deficient number, since it is larger than the sum of its proper divisors (185218351).

1296528401 is an equidigital number, since it uses as much as digits as its factorization.

1296528401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185218350.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 1296528401 is about 36007.3381548817. The cubic root of 1296528401 is about 1090.4205096924.

The spelling of 1296528401 in words is "one billion, two hundred ninety-six million, five hundred twenty-eight thousand, four hundred one".