998901653 has 16 divisors (see below), whose sum is σ = 1048196160. Its totient is φ = 951035904.

The previous prime is 998901637. The next prime is 998901671. The reversal of 998901653 is 356109899.

998901653 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 998901653 - 2⁴ = 998901637 is a prime.

It is a super-2 number, since 2×998901653² = 1995609024732264818, which contains 22 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998901853) 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, 370133 + ... + 372821.

It is an arithmetic number, because the mean of its divisors is an integer number (65512260).

Almost surely, 2^998901653 is an apocalyptic number.

It is an amenable number.

998901653 is a deficient number, since it is larger than the sum of its proper divisors (49294507).

998901653 is a wasteful number, since it uses less digits than its factorization.

998901653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2948.

The product of its (nonzero) digits is 524880, while the sum is 50.

The square root of 998901653 is about 31605.4054395763. The cubic root of 998901653 is about 999.6337502108.

The spelling of 998901653 in words is "nine hundred ninety-eight million, nine hundred one thousand, six hundred fifty-three".