2156246454 has 16 divisors (see below), whose sum is σ = 4461199920. Its totient is φ = 693964320.

The previous prime is 2156246453. The next prime is 2156246467. The reversal of 2156246454 is 4546426512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156246453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6195937 + ... + 6196284.

It is an arithmetic number, because the mean of its divisors is an integer number (278824995).

Almost surely, 2^2156246454 is an apocalyptic number.

2156246454 is an abundant number, since it is smaller than the sum of its proper divisors (2304953466).

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

2156246454 is a wasteful number, since it uses less digits than its factorization.

2156246454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12392255.

The product of its digits is 230400, while the sum is 39.

The square root of 2156246454 is about 46435.4008704566. The cubic root of 2156246454 is about 1291.9116048979.

The spelling of 2156246454 in words is "two billion, one hundred fifty-six million, two hundred forty-six thousand, four hundred fifty-four".