154490266649 has 2 divisors, whose sum is σ = 154490266650. Its totient is φ = 154490266648.

The previous prime is 154490266589. The next prime is 154490266709. The reversal of 154490266649 is 946662094451.

It is a balanced prime because it is at equal distance from previous prime (154490266589) and next prime (154490266709).

It can be written as a sum of positive squares in only one way, i.e., 143456865049 + 11033401600 = 378757^2 + 105040^2 .

It is an emirp because it is prime and its reverse (946662094451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 154490266649 - 2²⁰ = 154489218073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 154490266594 and 154490266603.

It is not a weakly prime, because it can be changed into another prime (154490260649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77245133324 + 77245133325.

It is an arithmetic number, because the mean of its divisors is an integer number (77245133325).

Almost surely, 2^154490266649 is an apocalyptic number.

It is an amenable number.

154490266649 is a deficient number, since it is larger than the sum of its proper divisors (1).

154490266649 is an equidigital number, since it uses as much as digits as its factorization.

154490266649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11197440, while the sum is 56.

The spelling of 154490266649 in words is "one hundred fifty-four billion, four hundred ninety million, two hundred sixty-six thousand, six hundred forty-nine".