154101985 has 8 divisors (see below), whose sum is σ = 189432936. Its totient is φ = 120274560.

The previous prime is 154101979. The next prime is 154102007. The reversal of 154101985 is 589101451.

154101985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 14318656 + 139783329 = 3784^2 + 11823^2 .

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

It is not a de Polignac number, because 154101985 - 2³ = 154101977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 154101985.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375654 + ... + 376063.

It is an arithmetic number, because the mean of its divisors is an integer number (23679117).

Almost surely, 2^154101985 is an apocalyptic number.

It is an amenable number.

154101985 is a deficient number, since it is larger than the sum of its proper divisors (35330951).

154101985 is an equidigital number, since it uses as much as digits as its factorization.

154101985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751763.

The product of its (nonzero) digits is 7200, while the sum is 34.

The square root of 154101985 is about 12413.7820586637. The cubic root of 154101985 is about 536.1291376397.

The spelling of 154101985 in words is "one hundred fifty-four million, one hundred one thousand, nine hundred eighty-five".