1151515140 has 192 divisors, whose sum is σ = 3499856640. Its totient is φ = 282009600.

The previous prime is 1151515129. The next prime is 1151515187. The reversal of 1151515140 is 415151511.

It is a self number, because there is not a number n which added to its sum of digits gives 1151515140.

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 63 ways as a sum of consecutive naturals, for example, 8405152 + ... + 8405288.

It is an arithmetic number, because the mean of its divisors is an integer number (18228420).

Almost surely, 2^1151515140 is an apocalyptic number.

1151515140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1151515140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1749928320).

1151515140 is an abundant number, since it is smaller than the sum of its proper divisors (2348341500).

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

1151515140 is a wasteful number, since it uses less digits than its factorization.

1151515140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342 (or 340 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 24.

The square root of 1151515140 is about 33933.9820828620. The cubic root of 1151515140 is about 1048.1494661342.

Adding to 1151515140 its reverse (415151511), we get a palindrome (1566666651).

The spelling of 1151515140 in words is "one billion, one hundred fifty-one million, five hundred fifteen thousand, one hundred forty".