3953640137 has 4 divisors (see below), whose sum is σ = 4161726480. Its totient is φ = 3745553796.

The previous prime is 3953640133. The next prime is 3953640157. The reversal of 3953640137 is 7310463593.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7310463593 = 10169 ⋅718897.

It is a cyclic number.

It is not a de Polignac number, because 3953640137 - 2² = 3953640133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3953640094 and 3953640103.

It is not an unprimeable number, because it can be changed into a prime (3953640133) 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, 104043143 + ... + 104043180.

It is an arithmetic number, because the mean of its divisors is an integer number (1040431620).

Almost surely, 2^3953640137 is an apocalyptic number.

It is an amenable number.

3953640137 is a deficient number, since it is larger than the sum of its proper divisors (208086343).

3953640137 is a wasteful number, since it uses less digits than its factorization.

3953640137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208086342.

The product of its (nonzero) digits is 204120, while the sum is 41.

The square root of 3953640137 is about 62877.9781561080. The cubic root of 3953640137 is about 1581.2445645853.

The spelling of 3953640137 in words is "three billion, nine hundred fifty-three million, six hundred forty thousand, one hundred thirty-seven".