16121395 has 8 divisors (see below), whose sum is σ = 19969920. Its totient is φ = 12480960.

The previous prime is 16121387. The next prime is 16121407. The reversal of 16121395 is 59312161.

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

It is not a de Polignac number, because 16121395 - 2³ = 16121387 is a prime.

It is an unprimeable number.

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, 51850 + ... + 52159.

It is an arithmetic number, because the mean of its divisors is an integer number (2496240).

Almost surely, 2^16121395 is an apocalyptic number.

16121395 is a deficient number, since it is larger than the sum of its proper divisors (3848525).

16121395 is a wasteful number, since it uses less digits than its factorization.

16121395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104045.

The product of its digits is 1620, while the sum is 28.

The square root of 16121395 is about 4015.1457009678. The cubic root of 16121395 is about 252.6198888239.

The spelling of 16121395 in words is "sixteen million, one hundred twenty-one thousand, three hundred ninety-five".