154000911949 has 4 divisors (see below), whose sum is σ = 154388823964. Its totient is φ = 153612999936.

The previous prime is 154000911901. The next prime is 154000911971. The reversal of 154000911949 is 949119000451.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 119659262724 + 34341649225 = 345918^2 + 185315^2 .

It is a cyclic number.

It is not a de Polignac number, because 154000911949 - 2⁷ = 154000911821 is a prime.

It is a super-2 number, since 2×154000911949² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154000911989) 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, 193955412 + ... + 193956205.

It is an arithmetic number, because the mean of its divisors is an integer number (38597205991).

Almost surely, 2^154000911949 is an apocalyptic number.

It is an amenable number.

154000911949 is a deficient number, since it is larger than the sum of its proper divisors (387912015).

154000911949 is an equidigital number, since it uses as much as digits as its factorization.

154000911949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387912014.

The product of its (nonzero) digits is 58320, while the sum is 43.

The spelling of 154000911949 in words is "one hundred fifty-four billion, nine hundred eleven thousand, nine hundred forty-nine".