190678961 has 4 divisors (see below), whose sum is σ = 208013424. Its totient is φ = 173344500.

The previous prime is 190678937. The next prime is 190678967. The reversal of 190678961 is 169876091.

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.

It is a cyclic number.

It is not a de Polignac number, because 190678961 - 2¹⁰ = 190677937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190678967) 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, 8667215 + ... + 8667236.

It is an arithmetic number, because the mean of its divisors is an integer number (52003356).

Almost surely, 2^190678961 is an apocalyptic number.

190678961 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

190678961 is a deficient number, since it is larger than the sum of its proper divisors (17334463).

190678961 is a wasteful number, since it uses less digits than its factorization.

190678961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17334462.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 190678961 is about 13808.6552929675. The cubic root of 190678961 is about 575.5736792440.

The spelling of 190678961 in words is "one hundred ninety million, six hundred seventy-eight thousand, nine hundred sixty-one".