1354972649 has 2 divisors, whose sum is σ = 1354972650. Its totient is φ = 1354972648.

The previous prime is 1354972603. The next prime is 1354972651. The reversal of 1354972649 is 9462794531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1346890000 + 8082649 = 36700^2 + 2843^2 .

It is a cyclic number.

It is not a de Polignac number, because 1354972649 - 2⁸ = 1354972393 is a prime.

Together with 1354972651, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1354972597 and 1354972606.

It is not a weakly prime, because it can be changed into another prime (1354972049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677486324 + 677486325.

It is an arithmetic number, because the mean of its divisors is an integer number (677486325).

Almost surely, 2^1354972649 is an apocalyptic number.

It is an amenable number.

1354972649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1354972649 is an equidigital number, since it uses as much as digits as its factorization.

1354972649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 50.

The square root of 1354972649 is about 36809.9531241212. The cubic root of 1354972649 is about 1106.5647791212.

The spelling of 1354972649 in words is "one billion, three hundred fifty-four million, nine hundred seventy-two thousand, six hundred forty-nine".