154939738 has 8 divisors (see below), whose sum is σ = 238078260. Its totient is φ = 75580320.

The previous prime is 154939727. The next prime is 154939769. The reversal of 154939738 is 837939451.

It can be written as a sum of positive squares in 2 ways, for example, as 123276609 + 31663129 = 11103^2 + 5627^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 154939691 and 154939700.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 944673 + ... + 944836.

Almost surely, 2^154939738 is an apocalyptic number.

154939738 is a deficient number, since it is larger than the sum of its proper divisors (83138522).

154939738 is a wasteful number, since it uses less digits than its factorization.

154939738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889552.

The product of its digits is 816480, while the sum is 49.

The square root of 154939738 is about 12447.4791825494. The cubic root of 154939738 is about 537.0989117390.

The spelling of 154939738 in words is "one hundred fifty-four million, nine hundred thirty-nine thousand, seven hundred thirty-eight".