3154393021 has 8 divisors (see below), whose sum is σ = 3452728664. Its totient is φ = 2864013120.

The previous prime is 3154393019. The next prime is 3154393037. The reversal of 3154393021 is 1203934513.

It can be written as a sum of positive squares in 4 ways, for example, as 19624900 + 3134768121 = 4430^2 + 55989^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3154393021 - 2¹ = 3154393019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3154393621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1988106 + ... + 1989691.

It is an arithmetic number, because the mean of its divisors is an integer number (431591083).

Almost surely, 2^3154393021 is an apocalyptic number.

It is an amenable number.

3154393021 is a deficient number, since it is larger than the sum of its proper divisors (298335643).

3154393021 is a wasteful number, since it uses less digits than its factorization.

3154393021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3977871.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 3154393021 is about 56163.9833078104. The cubic root of 3154393021 is about 1466.5783438950.

The spelling of 3154393021 in words is "three billion, one hundred fifty-four million, three hundred ninety-three thousand, twenty-one".