1153468381 has 4 divisors (see below), whose sum is σ = 1242196732. Its totient is φ = 1064740032.

The previous prime is 1153468373. The next prime is 1153468399. The reversal of 1153468381 is 1838643511.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 219188025 + 934280356 = 14805^2 + 30566^2 .

It is a cyclic number.

It is not a de Polignac number, because 1153468381 - 2³ = 1153468373 is a prime.

It is a super-2 number, since 2×1153468381² = 2660978611933522322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153468361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44364156 + ... + 44364181.

It is an arithmetic number, because the mean of its divisors is an integer number (310549183).

Almost surely, 2^1153468381 is an apocalyptic number.

It is an amenable number.

1153468381 is a deficient number, since it is larger than the sum of its proper divisors (88728351).

1153468381 is an equidigital number, since it uses as much as digits as its factorization.

1153468381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88728350.

The product of its digits is 69120, while the sum is 40.

The square root of 1153468381 is about 33962.7499033868. The cubic root of 1153468381 is about 1048.7417675201.

The spelling of 1153468381 in words is "one billion, one hundred fifty-three million, four hundred sixty-eight thousand, three hundred eighty-one".