988395681 has 16 divisors (see below), whose sum is σ = 1621983104. Its totient is φ = 521351424.

The previous prime is 988395673. The next prime is 988395697. The reversal of 988395681 is 186593889.

It is not a de Polignac number, because 988395681 - 2³ = 988395673 is a prime.

It is a super-2 number, since 2×988395681² = 1953852044438907522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (988394681) 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, 1809976 + ... + 1810521.

It is an arithmetic number, because the mean of its divisors is an integer number (101373944).

Almost surely, 2^988395681 is an apocalyptic number.

988395681 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

988395681 is a deficient number, since it is larger than the sum of its proper divisors (633587423).

988395681 is a wasteful number, since it uses less digits than its factorization.

988395681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3620520.

The product of its digits is 3732480, while the sum is 57.

The square root of 988395681 is about 31438.7608057315. The cubic root of 988395681 is about 996.1168342082.

The spelling of 988395681 in words is "nine hundred eighty-eight million, three hundred ninety-five thousand, six hundred eighty-one".