154473146 has 4 divisors (see below), whose sum is σ = 231709722. Its totient is φ = 77236572.

The previous prime is 154473139. The next prime is 154473233. The reversal of 154473146 is 641374451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 641374451 = 67 ⋅9572753.

It can be written as a sum of positive squares in only one way, i.e., 117397225 + 37075921 = 10835^2 + 6089^2 .

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 as a sum of consecutive naturals, namely, 38618285 + ... + 38618288.

Almost surely, 2^154473146 is an apocalyptic number.

154473146 is a deficient number, since it is larger than the sum of its proper divisors (77236576).

154473146 is an equidigital number, since it uses as much as digits as its factorization.

154473146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77236575.

The product of its digits is 40320, while the sum is 35.

The square root of 154473146 is about 12428.7226214121. The cubic root of 154473146 is about 536.5592222609.

The spelling of 154473146 in words is "one hundred fifty-four million, four hundred seventy-three thousand, one hundred forty-six".