1011125646 has 32 divisors (see below), whose sum is σ = 2256871680. Its totient is φ = 335553048.

The previous prime is 1011125611. The next prime is 1011125651. The reversal of 1011125646 is 6465211101.

1011125646 is a `hidden beast` number, since 1 + 0 + 1 + 1 + 12 + 5 + 646 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28986 + ... + 53501.

It is an arithmetic number, because the mean of its divisors is an integer number (70527240).

Almost surely, 2^1011125646 is an apocalyptic number.

1011125646 is an abundant number, since it is smaller than the sum of its proper divisors (1245746034).

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

1011125646 is a wasteful number, since it uses less digits than its factorization.

1011125646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82725 (or 82719 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1011125646 is about 31798.2019302979. The cubic root of 1011125646 is about 1003.6948797162.

Adding to 1011125646 its reverse (6465211101), we get a palindrome (7476336747).

The spelling of 1011125646 in words is "one billion, eleven million, one hundred twenty-five thousand, six hundred forty-six".