1328257754 has 4 divisors (see below), whose sum is σ = 1992386634. Its totient is φ = 664128876.

The previous prime is 1328257747. The next prime is 1328257769. The reversal of 1328257754 is 4577528231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4577528231 = 31 ⋅147662201.

It can be written as a sum of positive squares in only one way, i.e., 1188663529 + 139594225 = 34477^2 + 11815^2 .

It is a super-2 number, since 2×1328257754² = 3528537322122249032, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332064437 + ... + 332064440.

Almost surely, 2^1328257754 is an apocalyptic number.

1328257754 is a deficient number, since it is larger than the sum of its proper divisors (664128880).

1328257754 is an equidigital number, since it uses as much as digits as its factorization.

1328257754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664128879.

The product of its digits is 470400, while the sum is 44.

The square root of 1328257754 is about 36445.2706671250. The cubic root of 1328257754 is about 1099.2440409277.

The spelling of 1328257754 in words is "one billion, three hundred twenty-eight million, two hundred fifty-seven thousand, seven hundred fifty-four".