2154506774 has 12 divisors (see below), whose sum is σ = 3759394644. Its totient is φ = 923360004.

The previous prime is 2154506771. The next prime is 2154506777. The reversal of 2154506774 is 4776054512.

It is an interprime number because it is at equal distance from previous prime (2154506771) and next prime (2154506777).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154506771) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10992284 + ... + 10992479.

It is an arithmetic number, because the mean of its divisors is an integer number (313282887).

Almost surely, 2^2154506774 is an apocalyptic number.

2154506774 is a deficient number, since it is larger than the sum of its proper divisors (1604887870).

2154506774 is a wasteful number, since it uses less digits than its factorization.

2154506774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21984779 (or 21984772 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 41.

The square root of 2154506774 is about 46416.6648306403. The cubic root of 2154506774 is about 1291.5640692554.

The spelling of 2154506774 in words is "two billion, one hundred fifty-four million, five hundred six thousand, seven hundred seventy-four".