2149473941 has 4 divisors (see below), whose sum is σ = 2150379084. Its totient is φ = 2148568800.

The previous prime is 2149473929. The next prime is 2149473959. The reversal of 2149473941 is 1493749412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 543869041 + 1605604900 = 23321^2 + 40070^2 .

It is a cyclic number.

It is not a de Polignac number, because 2149473941 - 2²² = 2145279637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2149473892 and 2149473901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2149473961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449000 + ... + 453761.

It is an arithmetic number, because the mean of its divisors is an integer number (537594771).

Almost surely, 2^2149473941 is an apocalyptic number.

It is an amenable number.

2149473941 is a deficient number, since it is larger than the sum of its proper divisors (905143).

2149473941 is an equidigital number, since it uses as much as digits as its factorization.

2149473941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905142.

The product of its digits is 217728, while the sum is 44.

The square root of 2149473941 is about 46362.4194903588. The cubic root of 2149473941 is about 1290.5576062232.

The spelling of 2149473941 in words is "two billion, one hundred forty-nine million, four hundred seventy-three thousand, nine hundred forty-one".