2101814541 has 16 divisors (see below), whose sum is σ = 3131805120. Its totient is φ = 1393107120.

The previous prime is 2101814531. The next prime is 2101814549. The reversal of 2101814541 is 1454181012.

It is a happy number.

2101814541 is a `hidden beast` number, since 2 + 101 + 8 + 14 + 541 = 666.

It is not a de Polignac number, because 2101814541 - 2²³ = 2093425933 is a prime.

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

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101814549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220315 + ... + 229656.

It is an arithmetic number, because the mean of its divisors is an integer number (195737820).

Almost surely, 2^2101814541 is an apocalyptic number.

It is an amenable number.

2101814541 is a deficient number, since it is larger than the sum of its proper divisors (1029990579).

2101814541 is a wasteful number, since it uses less digits than its factorization.

2101814541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450153 (or 450147 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 2101814541 is about 45845.5509400858. The cubic root of 2101814541 is about 1280.9478942657.

Adding to 2101814541 its reverse (1454181012), we get a palindrome (3555995553).

The spelling of 2101814541 in words is "two billion, one hundred one million, eight hundred fourteen thousand, five hundred forty-one".