1011115140 has 48 divisors (see below), whose sum is σ = 3235569792. Its totient is φ = 231111936.

The previous prime is 1011115129. The next prime is 1011115151. The reversal of 1011115140 is 415111101.

It is an interprime number because it is at equal distance from previous prime (1011115129) and next prime (1011115151).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1203289 + ... + 1204128.

It is an arithmetic number, because the mean of its divisors is an integer number (67407704).

Almost surely, 2^1011115140 is an apocalyptic number.

1011115140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011115140 is an abundant number, since it is smaller than the sum of its proper divisors (2224454652).

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

1011115140 is a wasteful number, since it uses less digits than its factorization.

1011115140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2407436 (or 2407434 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 15.

The square root of 1011115140 is about 31798.0367318487. The cubic root of 1011115140 is about 1003.6914034404.

Adding to 1011115140 its reverse (415111101), we get a palindrome (1426226241).

The spelling of 1011115140 in words is "one billion, eleven million, one hundred fifteen thousand, one hundred forty".