1961471043 has 24 divisors (see below), whose sum is σ = 3291072096. Its totient is φ = 1102464000.

The previous prime is 1961471041. The next prime is 1961471051. The reversal of 1961471043 is 3401741691.

1961471043 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1961471043 - 2¹ = 1961471041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1961470989 and 1961471007.

It is not an unprimeable number, because it can be changed into a prime (1961471041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 251358 + ... + 259043.

It is an arithmetic number, because the mean of its divisors is an integer number (137128004).

Almost surely, 2^1961471043 is an apocalyptic number.

1961471043 is a deficient number, since it is larger than the sum of its proper divisors (1329601053).

1961471043 is a wasteful number, since it uses less digits than its factorization.

1961471043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510475 (or 510472 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 1961471043 is about 44288.4978634408. The cubic root of 1961471043 is about 1251.7779590636. Note that the first 3 decimals are identical.

The spelling of 1961471043 in words is "one billion, nine hundred sixty-one million, four hundred seventy-one thousand, forty-three".