998951613 has 16 divisors (see below), whose sum is σ = 1456997376. Its totient is φ = 603768240.

The previous prime is 998951609. The next prime is 998951623. The reversal of 998951613 is 316159899.

It is a happy number.

It is not a de Polignac number, because 998951613 - 2² = 998951609 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998951623) 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, 29131 + ... + 53352.

It is an arithmetic number, because the mean of its divisors is an integer number (91062336).

Almost surely, 2^998951613 is an apocalyptic number.

It is an amenable number.

998951613 is a deficient number, since it is larger than the sum of its proper divisors (458045763).

998951613 is a wasteful number, since it uses less digits than its factorization.

998951613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82864.

The product of its digits is 524880, while the sum is 51.

The square root of 998951613 is about 31606.1958008236. The cubic root of 998951613 is about 999.6504154716.

The spelling of 998951613 in words is "nine hundred ninety-eight million, nine hundred fifty-one thousand, six hundred thirteen".