1377374769 has 27 divisors (see below), whose sum is σ = 2026726923. Its totient is φ = 901400544.

The previous prime is 1377374767. The next prime is 1377374777. The reversal of 1377374769 is 9674737731.

The square root of 1377374769 is 37113.

It is a perfect power (a square), and thus also a powerful number.

1377374769 is a `hidden beast` number, since 137 + 7 + 37 + 476 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 264485169 + 1112889600 = 16263^2 + 33360^2 .

It is not a de Polignac number, because 1377374769 - 2¹ = 1377374767 is a prime.

It is a super-2 number, since 2×1377374769² = 3794322508555606722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1377374767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 9909102 + ... + 9909240.

Almost surely, 2^1377374769 is an apocalyptic number.

1377374769 is the 37113-rd square number.

1377374769 is the 18557-th centered octagonal number.

It is an amenable number.

1377374769 is a deficient number, since it is larger than the sum of its proper divisors (649352154).

1377374769 is an frugal number, since it uses more digits than its factorization.

1377374769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462 (or 231 counting only the distinct ones).

The product of its digits is 4667544, while the sum is 54.

The cubic root of 1377374769 is about 1112.6298515097.

The spelling of 1377374769 in words is "one billion, three hundred seventy-seven million, three hundred seventy-four thousand, seven hundred sixty-nine".