6390190145 has 8 divisors (see below), whose sum is σ = 7670768040. Its totient is φ = 5110458880.

The previous prime is 6390190127. The next prime is 6390190189. The reversal of 6390190145 is 5410910936.

It can be written as a sum of positive squares in 4 ways, for example, as 3646106689 + 2744083456 = 60383^2 + 52384^2 .

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

It is not a de Polignac number, because 6390190145 - 2¹⁴ = 6390173761 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6390190099 and 6390190108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194930 + ... + 225339.

It is an arithmetic number, because the mean of its divisors is an integer number (958846005).

Almost surely, 2^6390190145 is an apocalyptic number.

It is an amenable number.

6390190145 is a deficient number, since it is larger than the sum of its proper divisors (1280577895).

6390190145 is a wasteful number, since it uses less digits than its factorization.

6390190145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423315.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 6390190145 is about 79938.6648937797. The cubic root of 6390190145 is about 1855.6864376619.

The spelling of 6390190145 in words is "six billion, three hundred ninety million, one hundred ninety thousand, one hundred forty-five".