1654816965 has 16 divisors (see below), whose sum is σ = 2650648128. Its totient is φ = 881588736.

The previous prime is 1654816939. The next prime is 1654816973. The reversal of 1654816965 is 5696184561.

It is not a de Polignac number, because 1654816965 - 2⁶ = 1654816901 is a prime.

It is a super-2 number, since 2×1654816965² = 5476838375303622450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 47212 + ... + 74421.

It is an arithmetic number, because the mean of its divisors is an integer number (165665508).

Almost surely, 2^1654816965 is an apocalyptic number.

1654816965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1654816965 is a deficient number, since it is larger than the sum of its proper divisors (995831163).

1654816965 is a wasteful number, since it uses less digits than its factorization.

1654816965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122548.

The product of its digits is 1555200, while the sum is 51.

The square root of 1654816965 is about 40679.4415522141. The cubic root of 1654816965 is about 1182.8145408641.

The spelling of 1654816965 in words is "one billion, six hundred fifty-four million, eight hundred sixteen thousand, nine hundred sixty-five".