1153153440 has 72 divisors (see below), whose sum is σ = 3935141028. Its totient is φ = 307507200.

The previous prime is 1153153439. The next prime is 1153153447. The reversal of 1153153440 is 443513511.

It is a happy number.

1153153440 is a `hidden beast` number, since 1 + 1 + 5 + 315 + 344 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1129766544 + 23386896 = 33612^2 + 4836^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1153153447) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 398961 + ... + 401840.

Almost surely, 2^1153153440 is an apocalyptic number.

1153153440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1153153440 is an abundant number, since it is smaller than the sum of its proper divisors (2781987588).

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

1153153440 is a wasteful number, since it uses less digits than its factorization.

1153153440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800822 (or 800811 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1153153440 is about 33958.1130217802. The cubic root of 1153153440 is about 1048.6463099558.

Adding to 1153153440 its reverse (443513511), we get a palindrome (1596666951).

The spelling of 1153153440 in words is "one billion, one hundred fifty-three million, one hundred fifty-three thousand, four hundred forty".