1277048387 has 8 divisors (see below), whose sum is σ = 1363196160. Its totient is φ = 1192794120.

The previous prime is 1277048371. The next prime is 1277048401. The reversal of 1277048387 is 7838407721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1277048387 - 2⁴ = 1277048371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1277048287) 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, 471983 + ... + 474680.

It is an arithmetic number, because the mean of its divisors is an integer number (170399520).

Almost surely, 2^1277048387 is an apocalyptic number.

1277048387 is a deficient number, since it is larger than the sum of its proper divisors (86147773).

1277048387 is an equidigital number, since it uses as much as digits as its factorization.

1277048387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946753.

The product of its (nonzero) digits is 526848, while the sum is 47.

The square root of 1277048387 is about 35735.8137867322. The cubic root of 1277048387 is about 1084.9318303281.

The spelling of 1277048387 in words is "one billion, two hundred seventy-seven million, forty-eight thousand, three hundred eighty-seven".