1651645485 has 48 divisors (see below), whose sum is σ = 3393027456. Its totient is φ = 755034048.

The previous prime is 1651645459. The next prime is 1651645487. The reversal of 1651645485 is 5845461561.

1651645485 is a `hidden beast` number, since 1 + 6 + 5 + 164 + 5 + 485 = 666.

It is not a de Polignac number, because 1651645485 - 2¹⁰ = 1651644461 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1651645485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1651645487) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 88594 + ... + 105603.

It is an arithmetic number, because the mean of its divisors is an integer number (70688072).

Almost surely, 2^1651645485 is an apocalyptic number.

1651645485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1651645485 is an abundant number, since it is smaller than the sum of its proper divisors (1741381971).

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

1651645485 is an equidigital number, since it uses as much as digits as its factorization.

1651645485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194224 (or 194212 counting only the distinct ones).

The product of its digits is 576000, while the sum is 45.

The square root of 1651645485 is about 40640.4414961255. The cubic root of 1651645485 is about 1182.0584307223.

It can be divided in two parts, 16516 and 45485, that added together give a square (62001 = 249²).

The spelling of 1651645485 in words is "one billion, six hundred fifty-one million, six hundred forty-five thousand, four hundred eighty-five".