154914849 has 10 divisors (see below), whose sum is σ = 231416130. Its totient is φ = 103276512.

The previous prime is 154914841. The next prime is 154914871. The reversal of 154914849 is 948419451.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 153140625 + 1774224 = 12375^2 + 1332^2 .

It is not a de Polignac number, because 154914849 - 2³ = 154914841 is a prime.

It is a super-3 number, since 3×154914849³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (154914841) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 956184 + ... + 956345.

It is an arithmetic number, because the mean of its divisors is an integer number (23141613).

Almost surely, 2^154914849 is an apocalyptic number.

It is an amenable number.

154914849 is a deficient number, since it is larger than the sum of its proper divisors (76501281).

154914849 is an equidigital number, since it uses as much as digits as its factorization.

154914849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912541 (or 1912532 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 154914849 is about 12446.4793817368. The cubic root of 154914849 is about 537.0701509428.

The spelling of 154914849 in words is "one hundred fifty-four million, nine hundred fourteen thousand, eight hundred forty-nine".