980819691 has 16 divisors (see below), whose sum is σ = 1378540800. Its totient is φ = 618586848.

The previous prime is 980819677. The next prime is 980819699. The reversal of 980819691 is 196918089.

It is a happy number.

It is not a de Polignac number, because 980819691 - 2⁶ = 980819627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (980819699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29605 + ... + 53273.

It is an arithmetic number, because the mean of its divisors is an integer number (86158800).

Almost surely, 2^980819691 is an apocalyptic number.

980819691 is a deficient number, since it is larger than the sum of its proper divisors (397721109).

980819691 is a wasteful number, since it uses less digits than its factorization.

980819691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24418.

The product of its (nonzero) digits is 279936, while the sum is 51.

The square root of 980819691 is about 31318.0409827946. The cubic root of 980819691 is about 993.5652464257.

The spelling of 980819691 in words is "nine hundred eighty million, eight hundred nineteen thousand, six hundred ninety-one".