653129983 has 4 divisors (see below), whose sum is σ = 712505448. Its totient is φ = 593754520.

The previous prime is 653129977. The next prime is 653130007. The reversal of 653129983 is 389921356.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 653129983 - 2⁵ = 653129951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653129083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29687716 + ... + 29687737.

It is an arithmetic number, because the mean of its divisors is an integer number (178126362).

Almost surely, 2^653129983 is an apocalyptic number.

653129983 is a deficient number, since it is larger than the sum of its proper divisors (59375465).

653129983 is a wasteful number, since it uses less digits than its factorization.

653129983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59375464.

The product of its digits is 349920, while the sum is 46.

The square root of 653129983 is about 25556.4078657389. The cubic root of 653129983 is about 867.6272967750.

The spelling of 653129983 in words is "six hundred fifty-three million, one hundred twenty-nine thousand, nine hundred eighty-three".