3699019081 has 4 divisors (see below), whose sum is σ = 3700020100. Its totient is φ = 3698018064.

The previous prime is 3699019073. The next prime is 3699019087. The reversal of 3699019081 is 1809109963.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1127616400 + 2571402681 = 33580^2 + 50709^2 .

It is a cyclic number.

It is not a de Polignac number, because 3699019081 - 2³ = 3699019073 is a prime.

It is a super-2 number, since 2×3699019081² = 27365484323204169122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3699019087) by changing a digit.

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, 494946 + ... + 502363.

It is an arithmetic number, because the mean of its divisors is an integer number (925005025).

Almost surely, 2^3699019081 is an apocalyptic number.

It is an amenable number.

3699019081 is a deficient number, since it is larger than the sum of its proper divisors (1001019).

3699019081 is an equidigital number, since it uses as much as digits as its factorization.

3699019081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001018.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 3699019081 is about 60819.5616639910. The cubic root of 3699019081 is about 1546.5436798748.

The spelling of 3699019081 in words is "three billion, six hundred ninety-nine million, nineteen thousand, eighty-one".