1377869887 has 8 divisors (see below), whose sum is σ = 1393096320. Its totient is φ = 1362719640.

The previous prime is 1377869861. The next prime is 1377869897. The reversal of 1377869887 is 7889687731.

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 1377869887 - 2¹⁵ = 1377837119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377869827) 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, 17712 + ... + 55402.

It is an arithmetic number, because the mean of its divisors is an integer number (174137040).

Almost surely, 2^1377869887 is an apocalyptic number.

1377869887 is a deficient number, since it is larger than the sum of its proper divisors (15226433).

1377869887 is a wasteful number, since it uses less digits than its factorization.

1377869887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38093.

The product of its digits is 28449792, while the sum is 64.

The square root of 1377869887 is about 37119.6698126478. The cubic root of 1377869887 is about 1112.7631526961.

The spelling of 1377869887 in words is "one billion, three hundred seventy-seven million, eight hundred sixty-nine thousand, eight hundred eighty-seven".