1373081249 has 2 divisors, whose sum is σ = 1373081250. Its totient is φ = 1373081248.

The previous prime is 1373081239. The next prime is 1373081251. The reversal of 1373081249 is 9421803731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1361979025 + 11102224 = 36905^2 + 3332^2 .

It is a cyclic number.

It is not a de Polignac number, because 1373081249 - 2²⁸ = 1104645793 is a prime.

Together with 1373081251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1373081239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686540624 + 686540625.

It is an arithmetic number, because the mean of its divisors is an integer number (686540625).

Almost surely, 2^1373081249 is an apocalyptic number.

It is an amenable number.

1373081249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1373081249 is an equidigital number, since it uses as much as digits as its factorization.

1373081249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 1373081249 is about 37055.1109700133. The cubic root of 1373081249 is about 1111.4725603770.

The spelling of 1373081249 in words is "one billion, three hundred seventy-three million, eighty-one thousand, two hundred forty-nine".