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998951616 = 26391361

998951616 has 280 divisors, whose sum is σ = 3254607664. Its totient is φ = 302330880.

The previous prime is 998951609. The next prime is 998951623. The reversal of 998951616 is 616159899.

It is an interprime number because it is at equal distance from previous prime (998951609) and next prime (998951623).

It is a super-2 number, since 2×9989516162 = 1995808662218022912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a taxicab number since it can be written as a sum of two cubes in more than one way. Here 998951616 = 3063 + 9903 = 4323 + 9723.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 16376226 + ... + 16376286.

Almost surely, 2998951616 is an apocalyptic number.

998951616 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 998951616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1627303832).

998951616 is an abundant number, since it is smaller than the sum of its proper divisors (2255656048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

998951616 is an frugal number, since it uses more digits than its factorization.

998951616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 79 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 54.

The square root of 998951616 is about 31606.1958482827. The cubic root of 998951616 is about 999.6504164723.

The spelling of 998951616 in words is "nine hundred ninety-eight million, nine hundred fifty-one thousand, six hundred sixteen".