1657108845 has 192 divisors, whose sum is σ = 3637370880. Its totient is φ = 681053184.

The previous prime is 1657108837. The next prime is 1657108867. The reversal of 1657108845 is 5488017561.

It is not a de Polignac number, because 1657108845 - 2³ = 1657108837 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 1657108845.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 12095617 + ... + 12095753.

It is an arithmetic number, because the mean of its divisors is an integer number (18944640).

Almost surely, 2^1657108845 is an apocalyptic number.

1657108845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1657108845 is an abundant number, since it is smaller than the sum of its proper divisors (1980262035).

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

1657108845 is a wasteful number, since it uses less digits than its factorization.

1657108845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 45.

The square root of 1657108845 is about 40707.6018085075. The cubic root of 1657108845 is about 1183.3603451261.

The spelling of 1657108845 in words is "one billion, six hundred fifty-seven million, one hundred eight thousand, eight hundred forty-five".