1972140259 has 2 divisors, whose sum is σ = 1972140260. Its totient is φ = 1972140258.

The previous prime is 1972140253. The next prime is 1972140263. The reversal of 1972140259 is 9520412791.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1972140259 - 2³ = 1972140251 is a prime.

It is not a weakly prime, because it can be changed into another prime (1972140251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986070129 + 986070130.

It is an arithmetic number, because the mean of its divisors is an integer number (986070130).

Almost surely, 2^1972140259 is an apocalyptic number.

1972140259 is a deficient number, since it is larger than the sum of its proper divisors (1).

1972140259 is an equidigital number, since it uses as much as digits as its factorization.

1972140259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 1972140259 is about 44408.7858311844. The cubic root of 1972140259 is about 1254.0434946042.

The spelling of 1972140259 in words is "one billion, nine hundred seventy-two million, one hundred forty thousand, two hundred fifty-nine".