1994190365 has 8 divisors (see below), whose sum is σ = 2475546840. Its totient is φ = 1540340032.

The previous prime is 1994190323. The next prime is 1994190371. The reversal of 1994190365 is 5630914991.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 124233316 + 1869957049 = 11146^2 + 43243^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1994190365 - 2⁶ = 1994190301 is a prime.

It is a Curzon number.

It is a congruent number.

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, 6876374 + ... + 6876663.

It is an arithmetic number, because the mean of its divisors is an integer number (309443355).

Almost surely, 2^1994190365 is an apocalyptic number.

It is an amenable number.

1994190365 is a deficient number, since it is larger than the sum of its proper divisors (481356475).

1994190365 is a wasteful number, since it uses less digits than its factorization.

1994190365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13753071.

The product of its (nonzero) digits is 262440, while the sum is 47.

The square root of 1994190365 is about 44656.3586177825. The cubic root of 1994190365 is about 1258.6999198391.

The spelling of 1994190365 in words is "one billion, nine hundred ninety-four million, one hundred ninety thousand, three hundred sixty-five".