190164890961 has 6 divisors (see below), whose sum is σ = 274682620290. Its totient is φ = 126776593968.

The previous prime is 190164890947. The next prime is 190164890963. The reversal of 190164890961 is 169098461091.

190164890961 is a `hidden beast` number, since 1 + 90 + 16 + 489 + 0 + 9 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 179061000336 + 11103890625 = 423156^2 + 105375^2 .

It is not a de Polignac number, because 190164890961 - 2¹¹ = 190164888913 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 190164890898 and 190164890907.

It is not an unprimeable number, because it can be changed into a prime (190164890963) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10564716156 + ... + 10564716173.

It is an arithmetic number, because the mean of its divisors is an integer number (45780436715).

Almost surely, 2^190164890961 is an apocalyptic number.

It is an amenable number.

190164890961 is a deficient number, since it is larger than the sum of its proper divisors (84517729329).

190164890961 is a wasteful number, since it uses less digits than its factorization.

190164890961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21129432335 (or 21129432332 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 54.

The spelling of 190164890961 in words is "one hundred ninety billion, one hundred sixty-four million, eight hundred ninety thousand, nine hundred sixty-one".