1328907849 has 16 divisors (see below), whose sum is σ = 1812029184. Its totient is φ = 865987200.

The previous prime is 1328907847. The next prime is 1328907887. The reversal of 1328907849 is 9487098231.

It is not a de Polignac number, because 1328907849 - 2¹ = 1328907847 is a prime.

It is a super-2 number, since 2×1328907849² = 3531992142267613602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1328907847) 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, 27669 + ... + 58509.

It is an arithmetic number, because the mean of its divisors is an integer number (113251824).

Almost surely, 2^1328907849 is an apocalyptic number.

It is an amenable number.

1328907849 is a deficient number, since it is larger than the sum of its proper divisors (483121335).

1328907849 is a wasteful number, since it uses less digits than its factorization.

1328907849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31168.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 1328907849 is about 36454.1883601871. The cubic root of 1328907849 is about 1099.4233476169.

The spelling of 1328907849 in words is "one billion, three hundred twenty-eight million, nine hundred seven thousand, eight hundred forty-nine".