2154321534 has 8 divisors (see below), whose sum is σ = 4308643080. Its totient is φ = 718107176.

The previous prime is 2154321527. The next prime is 2154321577. The reversal of 2154321534 is 4351234512.

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

2154321534 is an admirable number.

It is a super-2 number, since 2×2154321534² = 9282202543712226312, which contains 22 as substring.

It is a Curzon number.

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, 179526789 + ... + 179526800.

It is an arithmetic number, because the mean of its divisors is an integer number (538580385).

Almost surely, 2^2154321534 is an apocalyptic number.

2154321534 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2154321534 is a wasteful number, since it uses less digits than its factorization.

2154321534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359053594.

The product of its digits is 14400, while the sum is 30.

The square root of 2154321534 is about 46414.6693837196. The cubic root of 2154321534 is about 1291.5270528660.

The spelling of 2154321534 in words is "two billion, one hundred fifty-four million, three hundred twenty-one thousand, five hundred thirty-four".