2148037649 has 2 divisors, whose sum is σ = 2148037650. Its totient is φ = 2148037648.

The previous prime is 2148037631. The next prime is 2148037657. The reversal of 2148037649 is 9467308412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2055262225 + 92775424 = 45335^2 + 9632^2 .

It is a cyclic number.

It is not a de Polignac number, because 2148037649 - 2⁸ = 2148037393 is a prime.

It is a super-2 number, since 2×2148037649² = 9228131483042894402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2148037349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074018824 + 1074018825.

It is an arithmetic number, because the mean of its divisors is an integer number (1074018825).

Almost surely, 2^2148037649 is an apocalyptic number.

It is an amenable number.

2148037649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2148037649 is an equidigital number, since it uses as much as digits as its factorization.

2148037649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 2148037649 is about 46346.9270718135. The cubic root of 2148037649 is about 1290.2700892716.

The spelling of 2148037649 in words is "two billion, one hundred forty-eight million, thirty-seven thousand, six hundred forty-nine".