1257678082 has 8 divisors (see below), whose sum is σ = 1896394752. Its totient is φ = 625546500.

The previous prime is 1257678049. The next prime is 1257678083. The reversal of 1257678082 is 2808767521.

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 (1257678083) 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, 1645794 + ... + 1646557.

It is an arithmetic number, because the mean of its divisors is an integer number (237049344).

Almost surely, 2^1257678082 is an apocalyptic number.

1257678082 is a deficient number, since it is larger than the sum of its proper divisors (638716670).

1257678082 is a wasteful number, since it uses less digits than its factorization.

1257678082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3292544.

The product of its (nonzero) digits is 376320, while the sum is 46.

The square root of 1257678082 is about 35463.7573023502. The cubic root of 1257678082 is about 1079.4184346049.

The spelling of 1257678082 in words is "one billion, two hundred fifty-seven million, six hundred seventy-eight thousand, eighty-two".