1990601194 has 8 divisors (see below), whose sum is σ = 3115723680. Its totient is φ = 952026636.

The previous prime is 1990601167. The next prime is 1990601203. The reversal of 1990601194 is 4911060991.

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

It is a super-2 number, since 2×1990601194² = 7924986227108451272, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 21636924 + ... + 21637015.

It is an arithmetic number, because the mean of its divisors is an integer number (389465460).

Almost surely, 2^1990601194 is an apocalyptic number.

1990601194 is a deficient number, since it is larger than the sum of its proper divisors (1125122486).

1990601194 is a wasteful number, since it uses less digits than its factorization.

1990601194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43273964.

The product of its (nonzero) digits is 17496, while the sum is 40.

The square root of 1990601194 is about 44616.1539579556. The cubic root of 1990601194 is about 1257.9443245901.

The spelling of 1990601194 in words is "one billion, nine hundred ninety million, six hundred one thousand, one hundred ninety-four".