1972159253 has 2 divisors, whose sum is σ = 1972159254. Its totient is φ = 1972159252.

The previous prime is 1972159247. The next prime is 1972159289. The reversal of 1972159253 is 3529512791.

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., 1511498884 + 460660369 = 38878^2 + 21463^2 .

It is a cyclic number.

It is not a de Polignac number, because 1972159253 - 2¹⁴ = 1972142869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1972159753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986079626 + 986079627.

It is an arithmetic number, because the mean of its divisors is an integer number (986079627).

Almost surely, 2^1972159253 is an apocalyptic number.

It is an amenable number.

1972159253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1972159253 is an equidigital number, since it uses as much as digits as its factorization.

1972159253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 170100, while the sum is 44.

The square root of 1972159253 is about 44408.9996847486. Note that the first 3 decimals coincide. The cubic root of 1972159253 is about 1254.0475205561.

The spelling of 1972159253 in words is "one billion, nine hundred seventy-two million, one hundred fifty-nine thousand, two hundred fifty-three".