1020203650 has 24 divisors (see below), whose sum is σ = 1928692404. Its totient is φ = 401390400.

The previous prime is 1020203647. The next prime is 1020203669. The reversal of 1020203650 is 563020201.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1125721 + 1019077929 = 1061^2 + 31923^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 164197 + ... + 170296.

Almost surely, 2^1020203650 is an apocalyptic number.

1020203650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1020203650 is a deficient number, since it is larger than the sum of its proper divisors (908488754).

1020203650 is a wasteful number, since it uses less digits than its factorization.

1020203650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334566 (or 334561 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 1020203650 is about 31940.6269506408. The cubic root of 1020203650 is about 1006.6896981461.

Adding to 1020203650 its reverse (563020201), we get a palindrome (1583223851).

The spelling of 1020203650 in words is "one billion, twenty million, two hundred three thousand, six hundred fifty".