3811726664 has 16 divisors (see below), whose sum is σ = 7148900220. Its totient is φ = 1905353280.

The previous prime is 3811726631. The next prime is 3811726691. The reversal of 3811726664 is 4666271183.

It can be written as a sum of positive squares in 2 ways, for example, as 3764804164 + 46922500 = 61358^2 + 6850^2 .

It is a super-2 number, since 2×3811726664² = 29058520322097137792, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31007 + ... + 92654.

Almost surely, 2^3811726664 is an apocalyptic number.

It is an amenable number.

3811726664 is a deficient number, since it is larger than the sum of its proper divisors (3337173556).

3811726664 is a wasteful number, since it uses less digits than its factorization.

3811726664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127520 (or 127516 counting only the distinct ones).

The product of its digits is 290304, while the sum is 44.

The square root of 3811726664 is about 61739.1825666651. The cubic root of 3811726664 is about 1562.0943085325.

The spelling of 3811726664 in words is "three billion, eight hundred eleven million, seven hundred twenty-six thousand, six hundred sixty-four".