1376220971 has 2 divisors, whose sum is σ = 1376220972. Its totient is φ = 1376220970.

The previous prime is 1376220919. The next prime is 1376220997. The reversal of 1376220971 is 1790226731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1376220971 - 2¹⁰ = 1376219947 is a prime.

It is a super-2 number, since 2×1376220971² = 3787968322040365682, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1376220071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688110485 + 688110486.

It is an arithmetic number, because the mean of its divisors is an integer number (688110486).

Almost surely, 2^1376220971 is an apocalyptic number.

1376220971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1376220971 is an equidigital number, since it uses as much as digits as its factorization.

1376220971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 1376220971 is about 37097.4523518799. The cubic root of 1376220971 is about 1112.3190891450.

The spelling of 1376220971 in words is "one billion, three hundred seventy-six million, two hundred twenty thousand, nine hundred seventy-one".