1020134637 has 12 divisors (see below), whose sum is σ = 1475453980. Its totient is φ = 679200768.

The previous prime is 1020134611. The next prime is 1020134651. The reversal of 1020134637 is 7364310201.

1020134637 is a `hidden beast` number, since 1 + 0 + 20 + 1 + 3 + 4 + 637 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 569251881 + 450882756 = 23859^2 + 21234^2 .

It is not a de Polignac number, because 1020134637 - 2¹⁹ = 1019610349 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1020134637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020134677) 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, 66778 + ... + 80619.

Almost surely, 2^1020134637 is an apocalyptic number.

It is an amenable number.

1020134637 is a deficient number, since it is larger than the sum of its proper divisors (455319343).

1020134637 is a wasteful number, since it uses less digits than its factorization.

1020134637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148172 (or 148169 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 1020134637 is about 31939.5465997875. The cubic root of 1020134637 is about 1006.6669980239. Note that the first 3 decimals are identical.

Adding to 1020134637 its reverse (7364310201), we get a palindrome (8384444838).

The spelling of 1020134637 in words is "one billion, twenty million, one hundred thirty-four thousand, six hundred thirty-seven".