16941961 has 4 divisors (see below), whose sum is σ = 17678592. Its totient is φ = 16205332.

The previous prime is 16941943. The next prime is 16941973. The reversal of 16941961 is 16914961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16914961 = 7 ⋅2416423.

It is a cyclic number.

It is not a de Polignac number, because 16941961 - 2⁵ = 16941929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16941961.

It is not an unprimeable number, because it can be changed into a prime (16941931) 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, 368281 + ... + 368326.

It is an arithmetic number, because the mean of its divisors is an integer number (4419648).

Almost surely, 2^16941961 is an apocalyptic number.

It is an amenable number.

16941961 is a deficient number, since it is larger than the sum of its proper divisors (736631).

16941961 is an equidigital number, since it uses as much as digits as its factorization.

16941961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736630.

The product of its digits is 11664, while the sum is 37.

The square root of 16941961 is about 4116.0613455098. The cubic root of 16941961 is about 256.8352085423.

Subtracting from 16941961 its reverse (16914961), we obtain a cube (27000 = 30³).

It can be divided in two parts, 1694 and 1961, that added together give a triangular number (3655 = T₈₅).

The spelling of 16941961 in words is "sixteen million, nine hundred forty-one thousand, nine hundred sixty-one".