190621051 has 8 divisors (see below), whose sum is σ = 201957840. Its totient is φ = 179298048.

The previous prime is 190621007. The next prime is 190621061. The reversal of 190621051 is 150126091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 190621051 - 2⁷ = 190620923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190621061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43095 + ... + 47311.

It is an arithmetic number, because the mean of its divisors is an integer number (25244730).

Almost surely, 2^190621051 is an apocalyptic number.

190621051 is a deficient number, since it is larger than the sum of its proper divisors (11336789).

190621051 is a wasteful number, since it uses less digits than its factorization.

190621051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6893.

The product of its (nonzero) digits is 540, while the sum is 25.

The square root of 190621051 is about 13806.5582604790. The cubic root of 190621051 is about 575.5154052976.

The spelling of 190621051 in words is "one hundred ninety million, six hundred twenty-one thousand, fifty-one".