154334749 has 2 divisors, whose sum is σ = 154334750. Its totient is φ = 154334748.

The previous prime is 154334731. The next prime is 154334753. The reversal of 154334749 is 947433451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153512100 + 822649 = 12390^2 + 907^2 .

It is a cyclic number.

It is not a de Polignac number, because 154334749 - 2⁵ = 154334717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154334729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77167374 + 77167375.

It is an arithmetic number, because the mean of its divisors is an integer number (77167375).

Almost surely, 2^154334749 is an apocalyptic number.

It is an amenable number.

154334749 is a deficient number, since it is larger than the sum of its proper divisors (1).

154334749 is an equidigital number, since it uses as much as digits as its factorization.

154334749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 40.

The square root of 154334749 is about 12423.1537461306. The cubic root of 154334749 is about 536.3989346935.

The spelling of 154334749 in words is "one hundred fifty-four million, three hundred thirty-four thousand, seven hundred forty-nine".