1380937969 has 2 divisors, whose sum is σ = 1380937970. Its totient is φ = 1380937968.

The previous prime is 1380937951. The next prime is 1380938023. The reversal of 1380937969 is 9697390831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1367520400 + 13417569 = 36980^2 + 3663^2 .

It is a cyclic number.

It is not a de Polignac number, because 1380937969 - 2¹⁹ = 1380413681 is a prime.

It is a super-2 number, since 2×1380937969² = 3813979348451689922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1380937919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690468984 + 690468985.

It is an arithmetic number, because the mean of its divisors is an integer number (690468985).

Almost surely, 2^1380937969 is an apocalyptic number.

It is an amenable number.

1380937969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380937969 is an equidigital number, since it uses as much as digits as its factorization.

1380937969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2204496, while the sum is 55.

The square root of 1380937969 is about 37160.9737358966. The cubic root of 1380937969 is about 1113.5884647128.

The spelling of 1380937969 in words is "one billion, three hundred eighty million, nine hundred thirty-seven thousand, nine hundred sixty-nine".