2101378 has 16 divisors (see below), whose sum is σ = 3290040. Its totient is φ = 1005696.

The previous prime is 2101357. The next prime is 2101391. The reversal of 2101378 is 8731012.

It can be written as a sum of positive squares in 4 ways, for example, as 1951609 + 149769 = 1397^2 + 387^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5208 + ... + 5596.

2^2101378 is an apocalyptic number.

2101378 is a deficient number, since it is larger than the sum of its proper divisors (1188662).

2101378 is a wasteful number, since it uses less digits than its factorization.

2101378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 2101378 is about 1449.6130518176. The cubic root of 2101378 is about 128.0859205027.

The spelling of 2101378 in words is "two million, one hundred one thousand, three hundred seventy-eight".