154484749 has 4 divisors (see below), whose sum is σ = 159468160. Its totient is φ = 149501340.

The previous prime is 154484741. The next prime is 154484773. The reversal of 154484749 is 947484451.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 154484749 - 2³ = 154484741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 154484699 and 154484708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154484741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2491659 + ... + 2491720.

It is an arithmetic number, because the mean of its divisors is an integer number (39867040).

Almost surely, 2^154484749 is an apocalyptic number.

It is an amenable number.

154484749 is a deficient number, since it is larger than the sum of its proper divisors (4983411).

154484749 is an equidigital number, since it uses as much as digits as its factorization.

154484749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4983410.

The product of its digits is 645120, while the sum is 46.

The square root of 154484749 is about 12429.1893943250. The cubic root of 154484749 is about 536.5726561834.

The spelling of 154484749 in words is "one hundred fifty-four million, four hundred eighty-four thousand, seven hundred forty-nine".