1386977671 has 16 divisors (see below), whose sum is σ = 1489051584. Its totient is φ = 1288514304.

The previous prime is 1386977651. The next prime is 1386977699. The reversal of 1386977671 is 1767796831.

It is a cyclic number.

It is not a de Polignac number, because 1386977671 - 2⁵ = 1386977639 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 (1386977621) 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, 643131 + ... + 645283.

It is an arithmetic number, because the mean of its divisors is an integer number (93065724).

Almost surely, 2^1386977671 is an apocalyptic number.

1386977671 is a deficient number, since it is larger than the sum of its proper divisors (102073913).

1386977671 is a wasteful number, since it uses less digits than its factorization.

1386977671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2970.

The product of its digits is 2667168, while the sum is 55.

The square root of 1386977671 is about 37242.1491189754. The cubic root of 1386977671 is about 1115.2095756525.

The spelling of 1386977671 in words is "one billion, three hundred eighty-six million, nine hundred seventy-seven thousand, six hundred seventy-one".