1250936778 has 64 divisors (see below), whose sum is σ = 3142137600. Its totient is φ = 329910336.

The previous prime is 1250936777. The next prime is 1250936783. The reversal of 1250936778 is 8776390521.

It is not an unprimeable number, because it can be changed into a prime (1250936777) 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 31 ways as a sum of consecutive naturals, for example, 3376 + ... + 50132.

It is an arithmetic number, because the mean of its divisors is an integer number (49095900).

Almost surely, 2^1250936778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1250936778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1571068800).

1250936778 is an abundant number, since it is smaller than the sum of its proper divisors (1891200822).

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

1250936778 is a wasteful number, since it uses less digits than its factorization.

1250936778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46796 (or 46782 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 48.

The square root of 1250936778 is about 35368.5846196876. The cubic root of 1250936778 is about 1077.4863747575.

The spelling of 1250936778 in words is "one billion, two hundred fifty million, nine hundred thirty-six thousand, seven hundred seventy-eight".