381155922249 has 4 divisors (see below), whose sum is σ = 508207896336. Its totient is φ = 254103948164.

The previous prime is 381155922239. The next prime is 381155922253. The reversal of 381155922249 is 942229551183.

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 381155922249 - 2¹² = 381155918153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (381155922229) 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, 63525987039 + ... + 63525987044.

It is an arithmetic number, because the mean of its divisors is an integer number (127051974084).

Almost surely, 2^381155922249 is an apocalyptic number.

It is an amenable number.

381155922249 is a deficient number, since it is larger than the sum of its proper divisors (127051974087).

381155922249 is a wasteful number, since it uses less digits than its factorization.

381155922249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127051974086.

The product of its digits is 1555200, while the sum is 51.

The spelling of 381155922249 in words is "three hundred eighty-one billion, one hundred fifty-five million, nine hundred twenty-two thousand, two hundred forty-nine".