258243649 has 8 divisors (see below), whose sum is σ = 276444000. Its totient is φ = 240504192.

The previous prime is 258243631. The next prime is 258243659. The reversal of 258243649 is 946342852.

258243649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 258243649 - 2⁹ = 258243137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258243619) 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, 114064 + ... + 116305.

It is an arithmetic number, because the mean of its divisors is an integer number (34555500).

Almost surely, 2^258243649 is an apocalyptic number.

It is an amenable number.

258243649 is a deficient number, since it is larger than the sum of its proper divisors (18200351).

258243649 is a wasteful number, since it uses less digits than its factorization.

258243649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230447.

The product of its digits is 414720, while the sum is 43.

The square root of 258243649 is about 16069.9610764930. The cubic root of 258243649 is about 636.8100126171.

The spelling of 258243649 in words is "two hundred fifty-eight million, two hundred forty-three thousand, six hundred forty-nine".