1259396478 has 32 divisors (see below), whose sum is σ = 2808652320. Its totient is φ = 418299840.

The previous prime is 1259396473. The next prime is 1259396497. The reversal of 1259396478 is 8746939521.

1259396478 is a `hidden beast` number, since 1 + 2 + 593 + 9 + 6 + 47 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1259396473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26325 + ... + 56672.

It is an arithmetic number, because the mean of its divisors is an integer number (87770385).

Almost surely, 2^1259396478 is an apocalyptic number.

1259396478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1259396478 is an abundant number, since it is smaller than the sum of its proper divisors (1549255842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1259396478 is a wasteful number, since it uses less digits than its factorization.

1259396478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83289 (or 83283 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 1259396478 is about 35487.9765272691. The cubic root of 1259396478 is about 1079.9098227175.

The spelling of 1259396478 in words is "one billion, two hundred fifty-nine million, three hundred ninety-six thousand, four hundred seventy-eight".