1026636534 has 72 divisors (see below), whose sum is σ = 2822800968. Its totient is φ = 266656320.

The previous prime is 1026636509. The next prime is 1026636539. The reversal of 1026636534 is 4356366201.

1026636534 is a `hidden beast` number, since 1 + 0 + 266 + 365 + 34 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026636539) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 43207 + ... + 62610.

It is an arithmetic number, because the mean of its divisors is an integer number (39205569).

Almost surely, 2^1026636534 is an apocalyptic number.

1026636534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1026636534 is an abundant number, since it is smaller than the sum of its proper divisors (1796164434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1026636534 is a wasteful number, since it uses less digits than its factorization.

1026636534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105850 (or 105840 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 1026636534 is about 32041.1693606835. The cubic root of 1026636534 is about 1008.8011570542.

The spelling of 1026636534 in words is "one billion, twenty-six million, six hundred thirty-six thousand, five hundred thirty-four".