1144630649 has 2 divisors, whose sum is σ = 1144630650. Its totient is φ = 1144630648.

The previous prime is 1144630633. The next prime is 1144630703. The reversal of 1144630649 is 9460364411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 872611600 + 272019049 = 29540^2 + 16493^2 .

It is a cyclic number.

It is not a de Polignac number, because 1144630649 - 2⁴ = 1144630633 is a prime.

It is a super-2 number, since 2×1144630649² = 2620358645260322402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1144630049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572315324 + 572315325.

It is an arithmetic number, because the mean of its divisors is an integer number (572315325).

Almost surely, 2^1144630649 is an apocalyptic number.

It is an amenable number.

1144630649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1144630649 is an equidigital number, since it uses as much as digits as its factorization.

1144630649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 1144630649 is about 33832.3905303778. The cubic root of 1144630649 is about 1046.0564544036.

The spelling of 1144630649 in words is "one billion, one hundred forty-four million, six hundred thirty thousand, six hundred forty-nine".