1208401949 has 2 divisors, whose sum is σ = 1208401950. Its totient is φ = 1208401948.

The previous prime is 1208401889. The next prime is 1208401963. The reversal of 1208401949 is 9491048021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1206172900 + 2229049 = 34730^2 + 1493^2 .

It is a cyclic number.

It is not a de Polignac number, because 1208401949 - 2⁸ = 1208401693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1208401969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 604200974 + 604200975.

It is an arithmetic number, because the mean of its divisors is an integer number (604200975).

Almost surely, 2^1208401949 is an apocalyptic number.

It is an amenable number.

1208401949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1208401949 is an equidigital number, since it uses as much as digits as its factorization.

1208401949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 1208401949 is about 34762.0763045017. The cubic root of 1208401949 is about 1065.1329152955.

The spelling of 1208401949 in words is "one billion, two hundred eight million, four hundred one thousand, nine hundred forty-nine".