1653009398 has 16 divisors (see below), whose sum is σ = 2507354304. Its totient is φ = 817240320.

The previous prime is 1653009343. The next prime is 1653009419. The reversal of 1653009398 is 8939003561.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254228 + ... + 260648.

It is an arithmetic number, because the mean of its divisors is an integer number (156709644).

Almost surely, 2^1653009398 is an apocalyptic number.

1653009398 is a deficient number, since it is larger than the sum of its proper divisors (854344906).

1653009398 is a wasteful number, since it uses less digits than its factorization.

1653009398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7847.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 1653009398 is about 40657.2182767095. The cubic root of 1653009398 is about 1182.3837187036.

The spelling of 1653009398 in words is "one billion, six hundred fifty-three million, nine thousand, three hundred ninety-eight".