1654139139 has 8 divisors (see below), whose sum is σ = 2301411072. Its totient is φ = 1054813320.

The previous prime is 1654139129. The next prime is 1654139147. The reversal of 1654139139 is 9319314561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1654139139 is a prime.

It is a super-2 number, since 2×1654139139² = 5472352582343322642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1654139139.

It is not an unprimeable number, because it can be changed into a prime (1654139129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11986447 + ... + 11986584.

It is an arithmetic number, because the mean of its divisors is an integer number (287676384).

Almost surely, 2^1654139139 is an apocalyptic number.

1654139139 is a deficient number, since it is larger than the sum of its proper divisors (647271933).

1654139139 is a wasteful number, since it uses less digits than its factorization.

1654139139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23973057.

The product of its digits is 87480, while the sum is 42.

The square root of 1654139139 is about 40671.1093898359. The cubic root of 1654139139 is about 1182.6530221066.

The spelling of 1654139139 in words is "one billion, six hundred fifty-four million, one hundred thirty-nine thousand, one hundred thirty-nine".