38491138601 has 4 divisors (see below), whose sum is σ = 38493498192. Its totient is φ = 38488779012.

The previous prime is 38491138597. The next prime is 38491138613. The reversal of 38491138601 is 10683119483.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38491138601 - 2² = 38491138597 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38491138661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1155155 + ... + 1188008.

It is an arithmetic number, because the mean of its divisors is an integer number (9623374548).

Almost surely, 2^38491138601 is an apocalyptic number.

It is an amenable number.

38491138601 is a deficient number, since it is larger than the sum of its proper divisors (2359591).

38491138601 is a wasteful number, since it uses less digits than its factorization.

38491138601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2359590.

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 38491138601 in words is "thirty-eight billion, four hundred ninety-one million, one hundred thirty-eight thousand, six hundred one".