2155428954 has 72 divisors (see below), whose sum is σ = 5633828928. Its totient is φ = 615830040.

The previous prime is 2155428953. The next prime is 2155428959. The reversal of 2155428954 is 4598245512.

2155428954 is a `hidden beast` number, since 2 + 1 + 554 + 2 + 8 + 95 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (2155428953) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 21442 + ... + 69069.

It is an arithmetic number, because the mean of its divisors is an integer number (78247624).

Almost surely, 2^2155428954 is an apocalyptic number.

2155428954 is an abundant number, since it is smaller than the sum of its proper divisors (3478399974).

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

2155428954 is an equidigital number, since it uses as much as digits as its factorization.

2155428954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90542 (or 90523 counting only the distinct ones).

The product of its digits is 576000, while the sum is 45.

The square root of 2155428954 is about 46426.5974846316. The cubic root of 2155428954 is about 1291.7483163222.

The spelling of 2155428954 in words is "two billion, one hundred fifty-five million, four hundred twenty-eight thousand, nine hundred fifty-four".