1151321040 has 200 divisors, whose sum is σ = 4033075200. Its totient is φ = 304383744.

The previous prime is 1151321029. The next prime is 1151321053. The reversal of 1151321040 is 401231511.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 822261 + ... + 823659.

It is an arithmetic number, because the mean of its divisors is an integer number (20165376).

Almost surely, 2^1151321040 is an apocalyptic number.

1151321040 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 1151321040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2016537600).

1151321040 is an abundant number, since it is smaller than the sum of its proper divisors (2881754160).

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

1151321040 is a wasteful number, since it uses less digits than its factorization.

1151321040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1551 (or 1536 counting only the distinct ones).

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

The square root of 1151321040 is about 33931.1219973640. The cubic root of 1151321040 is about 1048.0905706158.

Adding to 1151321040 its reverse (401231511), we get a palindrome (1552552551).

The spelling of 1151321040 in words is "one billion, one hundred fifty-one million, three hundred twenty-one thousand, forty".