3970757642 has 4 divisors (see below), whose sum is σ = 5956136466. Its totient is φ = 1985378820.

The previous prime is 3970757641. The next prime is 3970757647. The reversal of 3970757642 is 2467570793.

3970757642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2467570793 = 19 ⋅129872147.

It can be written as a sum of positive squares in only one way, i.e., 2684172481 + 1286585161 = 51809^2 + 35869^2 .

It is not an unprimeable number, because it can be changed into a prime (3970757641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 992689409 + ... + 992689412.

Almost surely, 2^3970757642 is an apocalyptic number.

3970757642 is a deficient number, since it is larger than the sum of its proper divisors (1985378824).

3970757642 is a wasteful number, since it uses less digits than its factorization.

3970757642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1985378823.

The product of its (nonzero) digits is 2222640, while the sum is 50.

The square root of 3970757642 is about 63013.9479956620. The cubic root of 3970757642 is about 1583.5233078743.

The spelling of 3970757642 in words is "three billion, nine hundred seventy million, seven hundred fifty-seven thousand, six hundred forty-two".