1678460258 has 8 divisors (see below), whose sum is σ = 2543646252. Its totient is φ = 830578176.

The previous prime is 1678460257. The next prime is 1678460297. The reversal of 1678460258 is 8520648761.

It can be written as a sum of positive squares in 2 ways, for example, as 1554961489 + 123498769 = 39433^2 + 11113^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1678460257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4325735 + ... + 4326122.

Almost surely, 2^1678460258 is an apocalyptic number.

1678460258 is a deficient number, since it is larger than the sum of its proper divisors (865185994).

1678460258 is an equidigital number, since it uses as much as digits as its factorization.

1678460258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8651956.

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 1678460258 is about 40969.0158290384. The cubic root of 1678460258 is about 1188.4211007229.

The spelling of 1678460258 in words is "one billion, six hundred seventy-eight million, four hundred sixty thousand, two hundred fifty-eight".