6154782921 has 32 divisors (see below), whose sum is σ = 10446406400. Its totient is φ = 3508375680.

The previous prime is 6154782899. The next prime is 6154782961. The reversal of 6154782921 is 1292874516.

6154782921 is a `hidden beast` number, since 6 + 1 + 547 + 82 + 9 + 21 = 666.

It is not a de Polignac number, because 6154782921 - 2¹⁷ = 6154651849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6154782961) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 37491 + ... + 117111.

It is an arithmetic number, because the mean of its divisors is an integer number (326450200).

Almost surely, 2^6154782921 is an apocalyptic number.

It is an amenable number.

6154782921 is a deficient number, since it is larger than the sum of its proper divisors (4291623479).

6154782921 is a wasteful number, since it uses less digits than its factorization.

6154782921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80046 (or 80040 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 6154782921 is about 78452.4245705638. The cubic root of 6154782921 is about 1832.6136343766.

The spelling of 6154782921 in words is "six billion, one hundred fifty-four million, seven hundred eighty-two thousand, nine hundred twenty-one".