1152840881 has 4 divisors (see below), whose sum is σ = 1156144500. Its totient is φ = 1149537264.

The previous prime is 1152840869. The next prime is 1152840919. The reversal of 1152840881 is 1880482511.

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 520569856 + 632271025 = 22816^2 + 25145^2 .

It is a cyclic number.

It is not a de Polignac number, because 1152840881 - 2³⁰ = 79099057 is a prime.

It is a super-2 number, since 2×1152840881² = 2658084193809712322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1152840851) 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, 1651286 + ... + 1651983.

It is an arithmetic number, because the mean of its divisors is an integer number (289036125).

Almost surely, 2^1152840881 is an apocalyptic number.

It is an amenable number.

1152840881 is a deficient number, since it is larger than the sum of its proper divisors (3303619).

1152840881 is an equidigital number, since it uses as much as digits as its factorization.

1152840881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3303618.

The product of its (nonzero) digits is 20480, while the sum is 38.

The square root of 1152840881 is about 33953.5105843269. The cubic root of 1152840881 is about 1048.5515571825.

The spelling of 1152840881 in words is "one billion, one hundred fifty-two million, eight hundred forty thousand, eight hundred eighty-one".