3820517990 has 16 divisors (see below), whose sum is σ = 6912567648. Its totient is φ = 1520288256.

The previous prime is 3820517977. The next prime is 3820517993. The reversal of 3820517990 is 997150283.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3820517993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 987842 + ... + 991701.

It is an arithmetic number, because the mean of its divisors is an integer number (432035478).

Almost surely, 2^3820517990 is an apocalyptic number.

3820517990 is a deficient number, since it is larger than the sum of its proper divisors (3092049658).

3820517990 is a wasteful number, since it uses less digits than its factorization.

3820517990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1979743.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 3820517990 is about 61810.3388600969. The cubic root of 3820517990 is about 1563.2943190296.

The spelling of 3820517990 in words is "three billion, eight hundred twenty million, five hundred seventeen thousand, nine hundred ninety".