1255776438 has 16 divisors (see below), whose sum is σ = 2870346240. Its totient is φ = 358793256.

The previous prime is 1255776437. The next prime is 1255776449. The reversal of 1255776438 is 8346775521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255776433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14949678 + ... + 14949761.

It is an arithmetic number, because the mean of its divisors is an integer number (179396640).

Almost surely, 2^1255776438 is an apocalyptic number.

1255776438 is an abundant number, since it is smaller than the sum of its proper divisors (1614569802).

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

1255776438 is a wasteful number, since it uses less digits than its factorization.

1255776438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29899451.

The product of its digits is 1411200, while the sum is 48.

The square root of 1255776438 is about 35436.9360695871. The cubic root of 1255776438 is about 1078.8741233450.

The spelling of 1255776438 in words is "one billion, two hundred fifty-five million, seven hundred seventy-six thousand, four hundred thirty-eight".