1151013240 has 192 divisors, whose sum is σ = 4178210400. Its totient is φ = 283295232.

The previous prime is 1151013239. The next prime is 1151013247. The reversal of 1151013240 is 423101511.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151013247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 121806 + ... + 130914.

Almost surely, 2^1151013240 is an apocalyptic number.

1151013240 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 1151013240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2089105200).

1151013240 is an abundant number, since it is smaller than the sum of its proper divisors (3027197160).

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

1151013240 is a wasteful number, since it uses less digits than its factorization.

1151013240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9148 (or 9132 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1151013240 is about 33926.5860351436. The cubic root of 1151013240 is about 1047.9971616768.

Adding to 1151013240 its reverse (423101511), we get a palindrome (1574114751).

It can be divided in two parts, 115101 and 3240, that added together give a triangular number (118341 = T₄₈₆).

The spelling of 1151013240 in words is "one billion, one hundred fifty-one million, thirteen thousand, two hundred forty".