1376631461 has 2 divisors, whose sum is σ = 1376631462. Its totient is φ = 1376631460.

The previous prime is 1376631449. The next prime is 1376631463. The reversal of 1376631461 is 1641366731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 805708225 + 570923236 = 28385^2 + 23894^2 .

It is a cyclic number.

It is not a de Polignac number, because 1376631461 - 2¹⁴ = 1376615077 is a prime.

It is a super-2 number, since 2×1376631461² = 3790228358829989042, which contains 22 as substring.

Together with 1376631463, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1376631463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688315730 + 688315731.

It is an arithmetic number, because the mean of its divisors is an integer number (688315731).

Almost surely, 2^1376631461 is an apocalyptic number.

It is an amenable number.

1376631461 is a deficient number, since it is larger than the sum of its proper divisors (1).

1376631461 is an equidigital number, since it uses as much as digits as its factorization.

1376631461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 38.

The square root of 1376631461 is about 37102.9845295496. The cubic root of 1376631461 is about 1112.4296698543.

The spelling of 1376631461 in words is "one billion, three hundred seventy-six million, six hundred thirty-one thousand, four hundred sixty-one".