3948919690 has 16 divisors (see below), whose sum is σ = 7116728040. Its totient is φ = 1577640640.

The previous prime is 3948919679. The next prime is 3948919747. The reversal of 3948919690 is 969198493.

It can be written as a sum of positive squares in 4 ways, for example, as 3150913689 + 798006001 = 56133^2 + 28249^2 .

It is a super-2 number, since 2×3948919690² = 31187933436139392200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232285 + ... + 248704.

Almost surely, 2^3948919690 is an apocalyptic number.

3948919690 is a deficient number, since it is larger than the sum of its proper divisors (3167808350).

3948919690 is a wasteful number, since it uses less digits than its factorization.

3948919690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481817.

The product of its (nonzero) digits is 3779136, while the sum is 58.

The square root of 3948919690 is about 62840.4303772659. The cubic root of 3948919690 is about 1580.6150052009.

The spelling of 3948919690 in words is "three billion, nine hundred forty-eight million, nine hundred nineteen thousand, six hundred ninety".