1011433986 has 64 divisors (see below), whose sum is σ = 2336918400. Its totient is φ = 323870400.

The previous prime is 1011433981. The next prime is 1011434009. The reversal of 1011433986 is 6893341101.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1011433986.

It is not an unprimeable number, because it can be changed into a prime (1011433981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 328896 + ... + 331956.

It is an arithmetic number, because the mean of its divisors is an integer number (36514350).

Almost surely, 2^1011433986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1011433986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1168459200).

1011433986 is an abundant number, since it is smaller than the sum of its proper divisors (1325484414).

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

1011433986 is a wasteful number, since it uses less digits than its factorization.

1011433986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3312 (or 3306 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 1011433986 is about 31803.0499480789. The cubic root of 1011433986 is about 1003.7968940166.

It can be divided in two parts, 10114 and 33986, that added together give a square (44100 = 210²).

The spelling of 1011433986 in words is "one billion, eleven million, four hundred thirty-three thousand, nine hundred eighty-six".