1258481378 has 48 divisors (see below), whose sum is σ = 2484022464. Its totient is φ = 464490720.

The previous prime is 1258481377. The next prime is 1258481431. The reversal of 1258481378 is 8731848521.

It is not an unprimeable number, because it can be changed into a prime (1258481377) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44276 + ... + 66912.

It is an arithmetic number, because the mean of its divisors is an integer number (51750468).

Almost surely, 2^1258481378 is an apocalyptic number.

1258481378 is a deficient number, since it is larger than the sum of its proper divisors (1225541086).

1258481378 is a wasteful number, since it uses less digits than its factorization.

1258481378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22695 (or 22676 counting only the distinct ones).

The product of its digits is 430080, while the sum is 47.

The square root of 1258481378 is about 35475.0810851786. The cubic root of 1258481378 is about 1079.6481987448.

The spelling of 1258481378 in words is "one billion, two hundred fifty-eight million, four hundred eighty-one thousand, three hundred seventy-eight".