1272615973 has 2 divisors, whose sum is σ = 1272615974. Its totient is φ = 1272615972.

The previous prime is 1272615923. The next prime is 1272615983. The reversal of 1272615973 is 3795162721.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 771617284 + 500998689 = 27778^2 + 22383^2 .

It is a cyclic number.

It is not a de Polignac number, because 1272615973 - 2¹³ = 1272607781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1272615923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 636307986 + 636307987.

It is an arithmetic number, because the mean of its divisors is an integer number (636307987).

Almost surely, 2^1272615973 is an apocalyptic number.

It is an amenable number.

1272615973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1272615973 is an equidigital number, since it uses as much as digits as its factorization.

1272615973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 43.

The square root of 1272615973 is about 35673.7434677103. The cubic root of 1272615973 is about 1083.6751717662.

The spelling of 1272615973 in words is "one billion, two hundred seventy-two million, six hundred fifteen thousand, nine hundred seventy-three".