1653616943 has 8 divisors (see below), whose sum is σ = 1804619520. Its totient is φ = 1502726680.

The previous prime is 1653616931. The next prime is 1653616957. The reversal of 1653616943 is 3496163561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1653616943 - 2⁸ = 1653616687 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1653616894 and 1653616903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1653616963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4346 + ... + 57672.

It is an arithmetic number, because the mean of its divisors is an integer number (225577440).

Almost surely, 2^1653616943 is an apocalyptic number.

1653616943 is a deficient number, since it is larger than the sum of its proper divisors (151002577).

1653616943 is a wasteful number, since it uses less digits than its factorization.

1653616943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56157.

The product of its digits is 349920, while the sum is 44.

The square root of 1653616943 is about 40664.6891418095. The cubic root of 1653616943 is about 1182.5285582365.

The spelling of 1653616943 in words is "one billion, six hundred fifty-three million, six hundred sixteen thousand, nine hundred forty-three".