2107851564 has 144 divisors (see below), whose sum is σ = 6389875968. Its totient is φ = 526559616.

The previous prime is 2107851563. The next prime is 2107851587. The reversal of 2107851564 is 4651587012.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (2107851563) 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, 391539 + ... + 396885.

Almost surely, 2^2107851564 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2107851564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3194937984).

2107851564 is an abundant number, since it is smaller than the sum of its proper divisors (4282024404).

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

2107851564 is a wasteful number, since it uses less digits than its factorization.

2107851564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5412 (or 5391 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 2107851564 is about 45911.3446111089. The cubic root of 2107851564 is about 1282.1731402971.

The spelling of 2107851564 in words is "two billion, one hundred seven million, eight hundred fifty-one thousand, five hundred sixty-four".