154089013 has 4 divisors (see below), whose sum is σ = 165942028. Its totient is φ = 142236000.

The previous prime is 154088981. The next prime is 154089043. The reversal of 154089013 is 310980451.

154089013 = 8777² + 8778².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310980451 = 211 ⋅1473841.

It can be written as a sum of positive squares in 2 ways, for example, as 77053284 + 77035729 = 8778^2 + 8777^2 .

It is a cyclic number.

It is not a de Polignac number, because 154089013 - 2⁵ = 154088981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154089043) 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, 5926488 + ... + 5926513.

It is an arithmetic number, because the mean of its divisors is an integer number (41485507).

Almost surely, 2^154089013 is an apocalyptic number.

154089013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

154089013 is the 8778-th centered square number.

It is an amenable number.

154089013 is a deficient number, since it is larger than the sum of its proper divisors (11853015).

154089013 is a wasteful number, since it uses less digits than its factorization.

154089013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11853014.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 154089013 is about 12413.2595638696. The cubic root of 154089013 is about 536.1140937878.

The spelling of 154089013 in words is "one hundred fifty-four million, eighty-nine thousand, thirteen".