3981274007 has 4 divisors (see below), whose sum is σ = 4046540856. Its totient is φ = 3916007160.

The previous prime is 3981273997. The next prime is 3981274027. The reversal of 3981274007 is 7004721893.

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 3981274007 - 2⁶ = 3981273943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3981274027) 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, 32633333 + ... + 32633454.

It is an arithmetic number, because the mean of its divisors is an integer number (1011635214).

Almost surely, 2^3981274007 is an apocalyptic number.

3981274007 is a deficient number, since it is larger than the sum of its proper divisors (65266849).

3981274007 is an equidigital number, since it uses as much as digits as its factorization.

3981274007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65266848.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 3981274007 is about 63097.3375587275. The cubic root of 3981274007 is about 1584.9200378943.

The spelling of 3981274007 in words is "three billion, nine hundred eighty-one million, two hundred seventy-four thousand, seven".