980351566 has 4 divisors (see below), whose sum is σ = 1470527352. Its totient is φ = 490175782.

The previous prime is 980351507. The next prime is 980351573. The reversal of 980351566 is 665153089.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 665153089 = 61 ⋅10904149.

It is a super-2 number, since 2×980351566² = 1922178385917304712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 245087890 + ... + 245087893.

It is an arithmetic number, because the mean of its divisors is an integer number (367631838).

Almost surely, 2^980351566 is an apocalyptic number.

980351566 is a deficient number, since it is larger than the sum of its proper divisors (490175786).

980351566 is a wasteful number, since it uses less digits than its factorization.

980351566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490175785.

The product of its (nonzero) digits is 194400, while the sum is 43.

The square root of 980351566 is about 31310.5663634499. The cubic root of 980351566 is about 993.4071518744.

The spelling of 980351566 in words is "nine hundred eighty million, three hundred fifty-one thousand, five hundred sixty-six".