1151445240 has 256 divisors, whose sum is σ = 4232217600. Its totient is φ = 276134400.

The previous prime is 1151445233. The next prime is 1151445257. The reversal of 1151445240 is 425441511.

It is a super-2 number, since 2×1151445240² = 2651652281437315200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 1223170 + ... + 1224110.

It is an arithmetic number, because the mean of its divisors is an integer number (16532100).

Almost surely, 2^1151445240 is an apocalyptic number.

1151445240 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 1151445240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2116108800).

1151445240 is an abundant number, since it is smaller than the sum of its proper divisors (3080772360).

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

1151445240 is a wasteful number, since it uses less digits than its factorization.

1151445240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075 (or 1065 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 1151445240 is about 33932.9521262150. The cubic root of 1151445240 is about 1048.1282572279.

Adding to 1151445240 its reverse (425441511), we get a palindrome (1576886751).

The spelling of 1151445240 in words is "one billion, one hundred fifty-one million, four hundred forty-five thousand, two hundred forty".