154101840946 has 4 divisors (see below), whose sum is σ = 231152761422. Its totient is φ = 77050920472.

The previous prime is 154101840917. The next prime is 154101841027. The reversal of 154101840946 is 649048101451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 649048101451 = 1259 ⋅515526689.

It can be written as a sum of positive squares in only one way, i.e., 120010280625 + 34091560321 = 346425^2 + 184639^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38525460235 + ... + 38525460238.

Almost surely, 2^154101840946 is an apocalyptic number.

154101840946 is a deficient number, since it is larger than the sum of its proper divisors (77050920476).

154101840946 is an equidigital number, since it uses as much as digits as its factorization.

154101840946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77050920475.

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 154101840946 in words is "one hundred fifty-four billion, one hundred one million, eight hundred forty thousand, nine hundred forty-six".