1653583979 has 2 divisors, whose sum is σ = 1653583980. Its totient is φ = 1653583978.

The previous prime is 1653583957. The next prime is 1653584027. The reversal of 1653583979 is 9793853561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1653583979 - 2¹⁶ = 1653518443 is a prime.

It is not a weakly prime, because it can be changed into another prime (1653583279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 826791989 + 826791990.

It is an arithmetic number, because the mean of its divisors is an integer number (826791990).

Almost surely, 2^1653583979 is an apocalyptic number.

1653583979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1653583979 is an equidigital number, since it uses as much as digits as its factorization.

1653583979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6123600, while the sum is 56.

The square root of 1653583979 is about 40664.2838249981. The cubic root of 1653583979 is about 1182.5207004855.

The spelling of 1653583979 in words is "one billion, six hundred fifty-three million, five hundred eighty-three thousand, nine hundred seventy-nine".