1020634533 has 32 divisors (see below), whose sum is σ = 1594137600. Its totient is φ = 643597488.

The previous prime is 1020634481. The next prime is 1020634547. The reversal of 1020634533 is 3354360201.

It is a happy number.

1020634533 is a `hidden beast` number, since 1 + 0 + 20 + 634 + 5 + 3 + 3 = 666.

It is not a de Polignac number, because 1020634533 - 2¹⁷ = 1020503461 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1020634497 and 1020634506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020634553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 453910 + ... + 456152.

It is an arithmetic number, because the mean of its divisors is an integer number (49816800).

Almost surely, 2^1020634533 is an apocalyptic number.

It is an amenable number.

1020634533 is a deficient number, since it is larger than the sum of its proper divisors (573503067).

1020634533 is a wasteful number, since it uses less digits than its factorization.

1020634533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3158 (or 3152 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 1020634533 is about 31947.3713003120. The cubic root of 1020634533 is about 1006.8314033258.

Adding to 1020634533 its reverse (3354360201), we get a palindrome (4374994734).

The spelling of 1020634533 in words is "one billion, twenty million, six hundred thirty-four thousand, five hundred thirty-three".