1651772164 has 27 divisors (see below), whose sum is σ = 3363694887. Its totient is φ = 707658504.

The previous prime is 1651772159. The next prime is 1651772203. The reversal of 1651772164 is 4612771561.

The square root of 1651772164 is 40642.

It is a perfect power (a square), and thus also a powerful 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 8 ways as a sum of consecutive naturals, for example, 567537 + ... + 570439.

Almost surely, 2^1651772164 is an apocalyptic number.

1651772164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1651772164 is the 40642-nd square number.

It is an amenable number.

1651772164 is an abundant number, since it is smaller than the sum of its proper divisors (1711922723).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1651772164 is an frugal number, since it uses more digits than its factorization.

1651772164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5824 (or 2912 counting only the distinct ones).

The product of its digits is 70560, while the sum is 40.

The cubic root of 1651772164 is about 1182.0886507166.

The spelling of 1651772164 in words is "one billion, six hundred fifty-one million, seven hundred seventy-two thousand, one hundred sixty-four".