38658491694 has 24 divisors (see below), whose sum is σ = 83876588640. Its totient is φ = 12868237248.

The previous prime is 38658491693. The next prime is 38658491723. The reversal of 38658491694 is 49619485683.

38658491694 is a `hidden beast` number, since 3 + 8 + 6 + 58 + 491 + 6 + 94 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38658491693) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1480587 + ... + 1506470.

It is an arithmetic number, because the mean of its divisors is an integer number (3494857860).

Almost surely, 2^38658491694 is an apocalyptic number.

38658491694 is an abundant number, since it is smaller than the sum of its proper divisors (45218096946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38658491694 is a wasteful number, since it uses less digits than its factorization.

38658491694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2987784 (or 2987781 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 63.

The spelling of 38658491694 in words is "thirty-eight billion, six hundred fifty-eight million, four hundred ninety-one thousand, six hundred ninety-four".