1154023643 has 8 divisors (see below), whose sum is σ = 1226920608. Its totient is φ = 1083020224.

The previous prime is 1154023613. The next prime is 1154023669. The reversal of 1154023643 is 3463204511.

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

It is a cyclic number.

It is not a de Polignac number, because 1154023643 - 2²⁴ = 1137246427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1154023613) 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, 472130 + ... + 474567.

It is an arithmetic number, because the mean of its divisors is an integer number (153365076).

Almost surely, 2^1154023643 is an apocalyptic number.

1154023643 is a deficient number, since it is larger than the sum of its proper divisors (72896965).

1154023643 is an equidigital number, since it uses as much as digits as its factorization.

1154023643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946773.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1154023643 is about 33970.9234934819. The cubic root of 1154023643 is about 1048.9100232622.

The spelling of 1154023643 in words is "one billion, one hundred fifty-four million, twenty-three thousand, six hundred forty-three".