3945190115 has 16 divisors (see below), whose sum is σ = 5200070400. Its totient is φ = 2860035552.

The previous prime is 3945190099. The next prime is 3945190141. The reversal of 3945190115 is 5110915493.

3945190115 = T₉₀₆₆ + T₉₀₆₇ + ... + T₉₁₆₀.

It is a cyclic number.

It is not a de Polignac number, because 3945190115 - 2⁴ = 3945190099 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 900605 + ... + 904974.

It is an arithmetic number, because the mean of its divisors is an integer number (325004400).

Almost surely, 2^3945190115 is an apocalyptic number.

3945190115 is a deficient number, since it is larger than the sum of its proper divisors (1254880285).

3945190115 is a wasteful number, since it uses less digits than its factorization.

3945190115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1805626.

The product of its (nonzero) digits is 24300, while the sum is 38.

The square root of 3945190115 is about 62810.7484034381. The cubic root of 3945190115 is about 1580.1172421412.

The spelling of 3945190115 in words is "three billion, nine hundred forty-five million, one hundred ninety thousand, one hundred fifteen".