154348681 has 2 divisors, whose sum is σ = 154348682. Its totient is φ = 154348680.

The previous prime is 154348673. The next prime is 154348717. The reversal of 154348681 is 186843451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131308681 + 23040000 = 11459^2 + 4800^2 .

It is a cyclic number.

It is not a de Polignac number, because 154348681 - 2³ = 154348673 is a prime.

It is a super-2 number, since 2×154348681² = 47647030652879522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (154348081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77174340 + 77174341.

It is an arithmetic number, because the mean of its divisors is an integer number (77174341).

Almost surely, 2^154348681 is an apocalyptic number.

It is an amenable number.

154348681 is a deficient number, since it is larger than the sum of its proper divisors (1).

154348681 is an equidigital number, since it uses as much as digits as its factorization.

154348681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 92160, while the sum is 40.

The square root of 154348681 is about 12423.7144606595. The cubic root of 154348681 is about 536.4150746860.

The spelling of 154348681 in words is "one hundred fifty-four million, three hundred forty-eight thousand, six hundred eighty-one".