154918398646 has 8 divisors (see below), whose sum is σ = 253502834184. Its totient is φ = 70417453920.

The previous prime is 154918398617. The next prime is 154918398671. The reversal of 154918398646 is 646893819451.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3520872675 + ... + 3520872718.

It is an arithmetic number, because the mean of its divisors is an integer number (31687854273).

Almost surely, 2^154918398646 is an apocalyptic number.

154918398646 is a deficient number, since it is larger than the sum of its proper divisors (98584435538).

154918398646 is a wasteful number, since it uses less digits than its factorization.

154918398646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7041745406.

The product of its digits is 44789760, while the sum is 64.

The spelling of 154918398646 in words is "one hundred fifty-four billion, nine hundred eighteen million, three hundred ninety-eight thousand, six hundred forty-six".