1154401491 has 8 divisors (see below), whose sum is σ = 1562175424. Its totient is φ = 758114280.

The previous prime is 1154401481. The next prime is 1154401511. The reversal of 1154401491 is 1941044511.

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

It is not a de Polignac number, because 1154401491 - 2⁷ = 1154401363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1154401481) 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, 2871445 + ... + 2871846.

It is an arithmetic number, because the mean of its divisors is an integer number (195271928).

Almost surely, 2^1154401491 is an apocalyptic number.

1154401491 is a deficient number, since it is larger than the sum of its proper divisors (407773933).

1154401491 is an equidigital number, since it uses as much as digits as its factorization.

1154401491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5743361.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 1154401491 is about 33976.4843825844. The cubic root of 1154401491 is about 1049.0244880769.

The spelling of 1154401491 in words is "one billion, one hundred fifty-four million, four hundred one thousand, four hundred ninety-one".