3948950651 has 4 divisors (see below), whose sum is σ = 3949905672. Its totient is φ = 3947995632.

The previous prime is 3948950647. The next prime is 3948950657. The reversal of 3948950651 is 1560598493.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1560598493 = 1213 ⋅1286561.

It is a cyclic number.

It is not a de Polignac number, because 3948950651 - 2² = 3948950647 is a prime.

It is a super-3 number, since 3×3948950651³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3948950651.

It is not an unprimeable number, because it can be changed into a prime (3948950657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 471281 + ... + 479586.

It is an arithmetic number, because the mean of its divisors is an integer number (987476418).

Almost surely, 2^3948950651 is an apocalyptic number.

3948950651 is a deficient number, since it is larger than the sum of its proper divisors (955021).

3948950651 is an equidigital number, since it uses as much as digits as its factorization.

3948950651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955020.

The product of its (nonzero) digits is 1166400, while the sum is 50.

The square root of 3948950651 is about 62840.6767229634. The cubic root of 3948950651 is about 1580.6191360601.

The spelling of 3948950651 in words is "three billion, nine hundred forty-eight million, nine hundred fifty thousand, six hundred fifty-one".