1654004481 has 4 divisors (see below), whose sum is σ = 2205339312. Its totient is φ = 1102669652.

The previous prime is 1654004479. The next prime is 1654004491. The reversal of 1654004481 is 1844004561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1654004481 - 2¹ = 1654004479 is a prime.

It is a super-2 number, since 2×1654004481² = 5471461646336158722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1654004491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275667411 + ... + 275667416.

It is an arithmetic number, because the mean of its divisors is an integer number (551334828).

Almost surely, 2^1654004481 is an apocalyptic number.

It is an amenable number.

1654004481 is a deficient number, since it is larger than the sum of its proper divisors (551334831).

1654004481 is an equidigital number, since it uses as much as digits as its factorization.

1654004481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551334830.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 1654004481 is about 40669.4539058493. The cubic root of 1654004481 is about 1182.6209292778.

The spelling of 1654004481 in words is "one billion, six hundred fifty-four million, four thousand, four hundred eighty-one".