1153440541 has 4 divisors (see below), whose sum is σ = 1258298784. Its totient is φ = 1048582300.

The previous prime is 1153440493. The next prime is 1153440551. The reversal of 1153440541 is 1450443511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1153440541 - 2¹⁹ = 1152916253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153440551) 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, 52429105 + ... + 52429126.

It is an arithmetic number, because the mean of its divisors is an integer number (314574696).

Almost surely, 2^1153440541 is an apocalyptic number.

1153440541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1153440541 is a deficient number, since it is larger than the sum of its proper divisors (104858243).

1153440541 is a wasteful number, since it uses less digits than its factorization.

1153440541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104858242.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 1153440541 is about 33962.3400401091. The cubic root of 1153440541 is about 1048.7333300093.

The spelling of 1153440541 in words is "one billion, one hundred fifty-three million, four hundred forty thousand, five hundred forty-one".