1144648858 has 4 divisors (see below), whose sum is σ = 1716973290. Its totient is φ = 572324428.

The previous prime is 1144648831. The next prime is 1144648859. The reversal of 1144648858 is 8588464411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8588464411 = 63977 ⋅134243.

It can be written as a sum of positive squares in only one way, i.e., 1078925409 + 65723449 = 32847^2 + 8107^2 .

It is not an unprimeable number, because it can be changed into a prime (1144648859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286162213 + ... + 286162216.

Almost surely, 2^1144648858 is an apocalyptic number.

1144648858 is a deficient number, since it is larger than the sum of its proper divisors (572324432).

1144648858 is an equidigital number, since it uses as much as digits as its factorization.

1144648858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572324431.

The product of its digits is 983040, while the sum is 49.

The square root of 1144648858 is about 33832.6596353287. The cubic root of 1144648858 is about 1046.0620013286.

The spelling of 1144648858 in words is "one billion, one hundred forty-four million, six hundred forty-eight thousand, eight hundred fifty-eight".