154484381 has 2 divisors, whose sum is σ = 154484382. Its totient is φ = 154484380.

The previous prime is 154484371. The next prime is 154484387. The reversal of 154484381 is 183484451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114276100 + 40208281 = 10690^2 + 6341^2 .

It is a cyclic number.

It is not a de Polignac number, because 154484381 - 2²⁶ = 87375517 is a prime.

It is a super-2 number, since 2×154484381² = 47730847945906322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154484387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77242190 + 77242191.

It is an arithmetic number, because the mean of its divisors is an integer number (77242191).

Almost surely, 2^154484381 is an apocalyptic number.

It is an amenable number.

154484381 is a deficient number, since it is larger than the sum of its proper divisors (1).

154484381 is an equidigital number, since it uses as much as digits as its factorization.

154484381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61440, while the sum is 38.

The square root of 154484381 is about 12429.1745904545. The cubic root of 154484381 is about 536.5722301243.

The spelling of 154484381 in words is "one hundred fifty-four million, four hundred eighty-four thousand, three hundred eighty-one".