2115963 has 20 divisors (see below), whose sum is σ = 3200208. Its totient is φ = 1393200.

The previous prime is 2115961. The next prime is 2115979. The reversal of 2115963 is 3695112.

It is not a de Polignac number, because 2115963 - 2¹ = 2115961 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115961) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12145 + ... + 12317.

2^2115963 is an apocalyptic number.

2115963 is a deficient number, since it is larger than the sum of its proper divisors (1084245).

2115963 is a wasteful number, since it uses less digits than its factorization.

2115963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336 (or 327 counting only the distinct ones).

The product of its digits is 1620, while the sum is 27.

The square root of 2115963 is about 1454.6350057661. The cubic root of 2115963 is about 128.3815721654.

The spelling of 2115963 in words is "two million, one hundred fifteen thousand, nine hundred sixty-three".