1372132409 has 2 divisors, whose sum is σ = 1372132410. Its totient is φ = 1372132408.

The previous prime is 1372132343. The next prime is 1372132417. The reversal of 1372132409 is 9042312731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1330206784 + 41925625 = 36472^2 + 6475^2 .

It is an emirp because it is prime and its reverse (9042312731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1372132409 - 2¹⁶ = 1372066873 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1372132469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686066204 + 686066205.

It is an arithmetic number, because the mean of its divisors is an integer number (686066205).

Almost surely, 2^1372132409 is an apocalyptic number.

It is an amenable number.

1372132409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1372132409 is an equidigital number, since it uses as much as digits as its factorization.

1372132409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 1372132409 is about 37042.3056652795. The cubic root of 1372132409 is about 1111.2164811779.

The spelling of 1372132409 in words is "one billion, three hundred seventy-two million, one hundred thirty-two thousand, four hundred nine".