3914243881 has 2 divisors, whose sum is σ = 3914243882. Its totient is φ = 3914243880.

The previous prime is 3914243873. The next prime is 3914243911. The reversal of 3914243881 is 1883424193.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3821217856 + 93026025 = 61816^2 + 9645^2 .

It is a cyclic number.

It is not a de Polignac number, because 3914243881 - 2³ = 3914243873 is a prime.

It is a super-2 number, since 2×3914243881² = 30642610319891884322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3914243831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1957121940 + 1957121941.

It is an arithmetic number, because the mean of its divisors is an integer number (1957121941).

Almost surely, 2^3914243881 is an apocalyptic number.

It is an amenable number.

3914243881 is a deficient number, since it is larger than the sum of its proper divisors (1).

3914243881 is an equidigital number, since it uses as much as digits as its factorization.

3914243881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 43.

The square root of 3914243881 is about 62563.9183635424. The cubic root of 3914243881 is about 1575.9748906529.

The spelling of 3914243881 in words is "three billion, nine hundred fourteen million, two hundred forty-three thousand, eight hundred eighty-one".