3820156819 has 4 divisors (see below), whose sum is σ = 4044871944. Its totient is φ = 3595441696.

The previous prime is 3820156817. The next prime is 3820156841. The reversal of 3820156819 is 9186510283.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3820156819 - 2¹ = 3820156817 is a prime.

It is a super-2 number, since 2×3820156819² = 29187196243504397522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3820156817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112357537 + ... + 112357570.

It is an arithmetic number, because the mean of its divisors is an integer number (1011217986).

Almost surely, 2^3820156819 is an apocalyptic number.

3820156819 is a deficient number, since it is larger than the sum of its proper divisors (224715125).

3820156819 is a wasteful number, since it uses less digits than its factorization.

3820156819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224715124.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 3820156819 is about 61807.4171843477. The cubic root of 3820156819 is about 1563.2450556952.

The spelling of 3820156819 in words is "three billion, eight hundred twenty million, one hundred fifty-six thousand, eight hundred nineteen".