1020206654 has 4 divisors (see below), whose sum is σ = 1530309984. Its totient is φ = 510103326.

The previous prime is 1020206641. The next prime is 1020206717. The reversal of 1020206654 is 4566020201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4566020201 = 283 ⋅16134347.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255051662 + ... + 255051665.

It is an arithmetic number, because the mean of its divisors is an integer number (382577496).

Almost surely, 2^1020206654 is an apocalyptic number.

1020206654 is a deficient number, since it is larger than the sum of its proper divisors (510103330).

1020206654 is an equidigital number, since it uses as much as digits as its factorization.

1020206654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510103329.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1020206654 is about 31940.6739753562. The cubic root of 1020206654 is about 1006.6906862145.

Adding to 1020206654 its reverse (4566020201), we get a palindrome (5586226855).

The spelling of 1020206654 in words is "one billion, twenty million, two hundred six thousand, six hundred fifty-four".