154735138 has 4 divisors (see below), whose sum is σ = 232102710. Its totient is φ = 77367568.

The previous prime is 154735129. The next prime is 154735151. The reversal of 154735138 is 831537451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 831537451 = 19 ⋅43765129.

It can be written as a sum of positive squares in only one way, i.e., 154678969 + 56169 = 12437^2 + 237^2 .

It is a junction number, because it is equal to n+sod(n) for n = 154735097 and 154735106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38683783 + ... + 38683786.

Almost surely, 2^154735138 is an apocalyptic number.

154735138 is a deficient number, since it is larger than the sum of its proper divisors (77367572).

154735138 is an equidigital number, since it uses as much as digits as its factorization.

154735138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77367571.

The product of its digits is 50400, while the sum is 37.

The square root of 154735138 is about 12439.2579360668. The cubic root of 154735138 is about 536.8623921629.

The spelling of 154735138 in words is "one hundred fifty-four million, seven hundred thirty-five thousand, one hundred thirty-eight".