3720613394 has 16 divisors (see below), whose sum is σ = 5627010168. Its totient is φ = 1844969472.

The previous prime is 3720613343. The next prime is 3720613427. The reversal of 3720613394 is 4933160273.

It can be written as a sum of positive squares in 4 ways, for example, as 3689955025 + 30658369 = 60745^2 + 5537^2 .

It is a super-2 number, since 2×3720613394² = 27685928055224398472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310034 + ... + 321810.

Almost surely, 2^3720613394 is an apocalyptic number.

3720613394 is a deficient number, since it is larger than the sum of its proper divisors (1906396774).

3720613394 is a wasteful number, since it uses less digits than its factorization.

3720613394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13069.

The product of its (nonzero) digits is 81648, while the sum is 38.

The square root of 3720613394 is about 60996.8310160454. The cubic root of 3720613394 is about 1549.5473383692.

The spelling of 3720613394 in words is "three billion, seven hundred twenty million, six hundred thirteen thousand, three hundred ninety-four".