154939513 has 8 divisors (see below), whose sum is σ = 164222208. Its totient is φ = 145675584.

The previous prime is 154939493. The next prime is 154939517. The reversal of 154939513 is 315939451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 154939513 - 2⁵ = 154939481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154939517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14620 + ... + 22882.

It is an arithmetic number, because the mean of its divisors is an integer number (20527776).

Almost surely, 2^154939513 is an apocalyptic number.

It is an amenable number.

154939513 is a deficient number, since it is larger than the sum of its proper divisors (9282695).

154939513 is a wasteful number, since it uses less digits than its factorization.

154939513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9383.

The product of its digits is 72900, while the sum is 40.

The square root of 154939513 is about 12447.4701445715. The cubic root of 154939513 is about 537.0986517512.

The spelling of 154939513 in words is "one hundred fifty-four million, nine hundred thirty-nine thousand, five hundred thirteen".