2156246407 has 8 divisors (see below), whose sum is σ = 2593980800. Its totient is φ = 1750936824.

The previous prime is 2156246381. The next prime is 2156246413. The reversal of 2156246407 is 7046426512.

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

It is a de Polignac number, because none of the positive numbers 2^k-2156246407 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 (2156246467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8106057 + ... + 8106322.

It is an arithmetic number, because the mean of its divisors is an integer number (324247600).

Almost surely, 2^2156246407 is an apocalyptic number.

2156246407 is a deficient number, since it is larger than the sum of its proper divisors (437734393).

2156246407 is a wasteful number, since it uses less digits than its factorization.

2156246407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16212405.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 2156246407 is about 46435.4003643772. The cubic root of 2156246407 is about 1291.9115955112.

The spelling of 2156246407 in words is "two billion, one hundred fifty-six million, two hundred forty-six thousand, four hundred seven".