1154561145 has 8 divisors (see below), whose sum is σ = 1847297856. Its totient is φ = 615765936.

The previous prime is 1154561143. The next prime is 1154561183. The reversal of 1154561145 is 5411654511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1154561145 - 2¹ = 1154561143 is a prime.

It is a super-2 number, since 2×1154561145² = 2666022875087422050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1154561141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38485357 + ... + 38485386.

It is an arithmetic number, because the mean of its divisors is an integer number (230912232).

Almost surely, 2^1154561145 is an apocalyptic number.

1154561145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1154561145 is a deficient number, since it is larger than the sum of its proper divisors (692736711).

1154561145 is an equidigital number, since it uses as much as digits as its factorization.

1154561145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76970751.

The product of its digits is 12000, while the sum is 33.

The square root of 1154561145 is about 33978.8337792809. The cubic root of 1154561145 is about 1049.0728459595.

The spelling of 1154561145 in words is "one billion, one hundred fifty-four million, five hundred sixty-one thousand, one hundred forty-five".