988564619 has 4 divisors (see below), whose sum is σ = 1129788144. Its totient is φ = 847341096.

The previous prime is 988564607. The next prime is 988564627. The reversal of 988564619 is 916465889.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 916465889 = 23 ⋅39846343.

It is not a de Polignac number, because 988564619 - 2²⁴ = 971787403 is a prime.

It is a super-2 number, since 2×988564619² = 1954520011877230322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (988566619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70611752 + ... + 70611765.

It is an arithmetic number, because the mean of its divisors is an integer number (282447036).

Almost surely, 2^988564619 is an apocalyptic number.

988564619 is a deficient number, since it is larger than the sum of its proper divisors (141223525).

988564619 is a wasteful number, since it uses less digits than its factorization.

988564619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141223524.

The product of its digits is 3732480, while the sum is 56.

The square root of 988564619 is about 31441.4474698605. The cubic root of 988564619 is about 996.1735835452.

The spelling of 988564619 in words is "nine hundred eighty-eight million, five hundred sixty-four thousand, six hundred nineteen".