1328287377 has 16 divisors (see below), whose sum is σ = 1837938240. Its totient is φ = 852274752.

The previous prime is 1328287327. The next prime is 1328287381. The reversal of 1328287377 is 7737828231.

It is a happy number.

It is not a de Polignac number, because 1328287377 - 2¹⁰ = 1328286353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1328287327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3498 + ... + 51660.

It is an arithmetic number, because the mean of its divisors is an integer number (114871140).

Almost surely, 2^1328287377 is an apocalyptic number.

It is an amenable number.

1328287377 is a deficient number, since it is larger than the sum of its proper divisors (509650863).

1328287377 is a wasteful number, since it uses less digits than its factorization.

1328287377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48512.

The product of its digits is 790272, while the sum is 48.

The square root of 1328287377 is about 36445.6770687554. The cubic root of 1328287377 is about 1099.2522127011.

The spelling of 1328287377 in words is "one billion, three hundred twenty-eight million, two hundred eighty-seven thousand, three hundred seventy-seven".