2154185317234 has 8 divisors (see below), whose sum is σ = 3231288153180. Its totient is φ = 1077089266176.

The previous prime is 2154185317199. The next prime is 2154185317247. The reversal of 2154185317234 is 4327135814512.

It can be written as a sum of positive squares in 2 ways, for example, as 1434597876009 + 719587441225 = 1197747^2 + 848285^2 .

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

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, 809839 + ... + 2228050.

Almost surely, 2^{2154185317234} is an apocalyptic number.

2154185317234 is a deficient number, since it is larger than the sum of its proper divisors (1077102835946).

2154185317234 is a wasteful number, since it uses less digits than its factorization.

2154185317234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3392444.

The product of its digits is 806400, while the sum is 46.

The spelling of 2154185317234 in words is "two trillion, one hundred fifty-four billion, one hundred eighty-five million, three hundred seventeen thousand, two hundred thirty-four".