1011111534 has 12 divisors (see below), whose sum is σ = 2190741696. Its totient is φ = 337037172.

The previous prime is 1011111463. The next prime is 1011111571. The reversal of 1011111534 is 4351111101.

1011111534 is a `hidden beast` number, since 10 + 11 + 111 + 534 = 666.

1011111534 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 56172863 = 1011111534 / (1 + 0 + 1 + 1 + 1 + 1 + 1 + 5 + 3 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28086414 + ... + 28086449.

It is an arithmetic number, because the mean of its divisors is an integer number (182561808).

Almost surely, 2^1011111534 is an apocalyptic number.

1011111534 is an abundant number, since it is smaller than the sum of its proper divisors (1179630162).

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

1011111534 is a wasteful number, since it uses less digits than its factorization.

1011111534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56172871 (or 56172868 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 18.

The square root of 1011111534 is about 31797.9800301843. The cubic root of 1011111534 is about 1003.6902102642.

Adding to 1011111534 its reverse (4351111101), we get a palindrome (5362222635).

The spelling of 1011111534 in words is "one billion, eleven million, one hundred eleven thousand, five hundred thirty-four".