2102975864 has 32 divisors (see below), whose sum is σ = 4323864240. Its totient is φ = 950937600.

The previous prime is 2102975857. The next prime is 2102975869. The reversal of 2102975864 is 4685792012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102975869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44927 + ... + 78894.

Almost surely, 2^2102975864 is an apocalyptic number.

It is an amenable number.

2102975864 is an abundant number, since it is smaller than the sum of its proper divisors (2220888376).

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

2102975864 is a wasteful number, since it uses less digits than its factorization.

2102975864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124031 (or 124027 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 2102975864 is about 45858.2147929899. The cubic root of 2102975864 is about 1281.1837730464.

The spelling of 2102975864 in words is "two billion, one hundred two million, nine hundred seventy-five thousand, eight hundred sixty-four".