1010903661 has 12 divisors (see below), whose sum is σ = 1466256220. Its totient is φ = 671137920.

The previous prime is 1010903653. The next prime is 1010903687. The reversal of 1010903661 is 1663090101.

It can be written as a sum of positive squares in 2 ways, for example, as 634737636 + 376166025 = 25194^2 + 19395^2 .

It is not a de Polignac number, because 1010903661 - 2³ = 1010903653 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010903611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 230866 + ... + 235203.

Almost surely, 2^1010903661 is an apocalyptic number.

It is an amenable number.

1010903661 is a deficient number, since it is larger than the sum of its proper divisors (455352559).

1010903661 is a wasteful number, since it uses less digits than its factorization.

1010903661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466316 (or 466313 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 1010903661 is about 31794.7112111433. The cubic root of 1010903661 is about 1003.6214231299.

Adding to 1010903661 its reverse (1663090101), we get a palindrome (2673993762).

The spelling of 1010903661 in words is "one billion, ten million, nine hundred three thousand, six hundred sixty-one".