38191964974 has 4 divisors (see below), whose sum is σ = 57287947464. Its totient is φ = 19095982486.

The previous prime is 38191964959. The next prime is 38191964977. The reversal of 38191964974 is 47946919183.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38191964977) 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 as a sum of consecutive naturals, namely, 9547991242 + ... + 9547991245.

It is an arithmetic number, because the mean of its divisors is an integer number (14321986866).

Almost surely, 2^38191964974 is an apocalyptic number.

38191964974 is a deficient number, since it is larger than the sum of its proper divisors (19095982490).

38191964974 is a wasteful number, since it uses less digits than its factorization.

38191964974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19095982489.

The product of its digits is 11757312, while the sum is 61.

The spelling of 38191964974 in words is "thirty-eight billion, one hundred ninety-one million, nine hundred sixty-four thousand, nine hundred seventy-four".