1972260714409 has 2 divisors, whose sum is σ = 1972260714410. Its totient is φ = 1972260714408.

The previous prime is 1972260714371. The next prime is 1972260714451. The reversal of 1972260714409 is 9044170622791.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1972260714384 + 25 = 1404372^2 + 5^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1972260714409 is a prime.

It is not a weakly prime, because it can be changed into another prime (1972260714469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986130357204 + 986130357205.

It is an arithmetic number, because the mean of its divisors is an integer number (986130357205).

Almost surely, 2^{1972260714409} is an apocalyptic number.

It is an amenable number.

1972260714409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1972260714409 is an equidigital number, since it uses as much as digits as its factorization.

1972260714409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The spelling of 1972260714409 in words is "one trillion, nine hundred seventy-two billion, two hundred sixty million, seven hundred fourteen thousand, four hundred nine".