2149903397 has 2 divisors, whose sum is σ = 2149903398. Its totient is φ = 2149903396.

The previous prime is 2149903387. The next prime is 2149903423. The reversal of 2149903397 is 7933099412.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2145635041 + 4268356 = 46321^2 + 2066^2 .

It is a cyclic number.

It is not a de Polignac number, because 2149903397 - 2⁸ = 2149903141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2149903387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074951698 + 1074951699.

It is an arithmetic number, because the mean of its divisors is an integer number (1074951699).

Almost surely, 2^2149903397 is an apocalyptic number.

It is an amenable number.

2149903397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2149903397 is an equidigital number, since it uses as much as digits as its factorization.

2149903397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 367416, while the sum is 47.

The square root of 2149903397 is about 46367.0507688380. The cubic root of 2149903397 is about 1290.6435498564.

The spelling of 2149903397 in words is "two billion, one hundred forty-nine million, nine hundred three thousand, three hundred ninety-seven".