1268188077 has 16 divisors (see below), whose sum is σ = 1837700480. Its totient is φ = 773260992.

The previous prime is 1268188073. The next prime is 1268188087. The reversal of 1268188077 is 7708818621.

1268188077 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1268188077 - 2² = 1268188073 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1268188073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144913 + ... + 153414.

It is an arithmetic number, because the mean of its divisors is an integer number (114856280).

Almost surely, 2^1268188077 is an apocalyptic number.

It is an amenable number.

1268188077 is a deficient number, since it is larger than the sum of its proper divisors (569512403).

1268188077 is a wasteful number, since it uses less digits than its factorization.

1268188077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298452.

The product of its (nonzero) digits is 301056, while the sum is 48.

The square root of 1268188077 is about 35611.6283957923. The cubic root of 1268188077 is about 1082.4168773101.

The spelling of 1268188077 in words is "one billion, two hundred sixty-eight million, one hundred eighty-eight thousand, seventy-seven".