1020244649 has 8 divisors (see below), whose sum is σ = 1064924160. Its totient is φ = 975591936.

The previous prime is 1020244607. The next prime is 1020244657. The reversal of 1020244649 is 9464420201.

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 1020244649 - 2²⁸ = 751809193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1020244699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136169 + ... + 143465.

It is an arithmetic number, because the mean of its divisors is an integer number (133115520).

Almost surely, 2^1020244649 is an apocalyptic number.

It is an amenable number.

1020244649 is a deficient number, since it is larger than the sum of its proper divisors (44679511).

1020244649 is an equidigital number, since it uses as much as digits as its factorization.

1020244649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13399.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 1020244649 is about 31941.2687443689. The cubic root of 1020244649 is about 1006.7031832701.

The spelling of 1020244649 in words is "one billion, twenty million, two hundred forty-four thousand, six hundred forty-nine".