1951454249 has 2 divisors, whose sum is σ = 1951454250. Its totient is φ = 1951454248.

The previous prime is 1951454227. The next prime is 1951454257. The reversal of 1951454249 is 9424541591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1336414249 + 615040000 = 36557^2 + 24800^2 .

It is an emirp because it is prime and its reverse (9424541591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1951454249 - 2¹² = 1951450153 is a prime.

It is not a weakly prime, because it can be changed into another prime (1951454209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 975727124 + 975727125.

It is an arithmetic number, because the mean of its divisors is an integer number (975727125).

Almost surely, 2^1951454249 is an apocalyptic number.

It is an amenable number.

1951454249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1951454249 is an equidigital number, since it uses as much as digits as its factorization.

1951454249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 259200, while the sum is 44.

The square root of 1951454249 is about 44175.2673902490. The cubic root of 1951454249 is about 1249.6434714396.

The spelling of 1951454249 in words is "one billion, nine hundred fifty-one million, four hundred fifty-four thousand, two hundred forty-nine".