1990073601 has 48 divisors (see below), whose sum is σ = 3137097600. Its totient is φ = 1210581504.

The previous prime is 1990073593. The next prime is 1990073611. The reversal of 1990073601 is 1063700991.

It is not a de Polignac number, because 1990073601 - 2³ = 1990073593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1990073611) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2371540 + ... + 2372378.

It is an arithmetic number, because the mean of its divisors is an integer number (65356200).

Almost surely, 2^1990073601 is an apocalyptic number.

It is an amenable number.

1990073601 is a deficient number, since it is larger than the sum of its proper divisors (1147023999).

1990073601 is a wasteful number, since it uses less digits than its factorization.

1990073601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318 (or 1315 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 1990073601 is about 44610.2409879167. The cubic root of 1990073601 is about 1257.8331787270.

The spelling of 1990073601 in words is "one billion, nine hundred ninety million, seventy-three thousand, six hundred one".