1437630979649 has 2 divisors, whose sum is σ = 1437630979650. Its totient is φ = 1437630979648.

The previous prime is 1437630979639. The next prime is 1437630979661. The reversal of 1437630979649 is 9469790367341.

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., 1430607366400 + 7023613249 = 1196080^2 + 83807^2 .

It is a cyclic number.

It is not a de Polignac number, because 1437630979649 - 2⁴ = 1437630979633 is a prime.

It is not a weakly prime, because it can be changed into another prime (1437630979639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 718815489824 + 718815489825.

It is an arithmetic number, because the mean of its divisors is an integer number (718815489825).

Almost surely, 2^{1437630979649} is an apocalyptic number.

It is an amenable number.

1437630979649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1437630979649 is an equidigital number, since it uses as much as digits as its factorization.

1437630979649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 185177664, while the sum is 68.

The spelling of 1437630979649 in words is "one trillion, four hundred thirty-seven billion, six hundred thirty million, nine hundred seventy-nine thousand, six hundred forty-nine".