381022154137 has 4 divisors (see below), whose sum is σ = 384517770340. Its totient is φ = 377526537936.

The previous prime is 381022154089. The next prime is 381022154143. The reversal of 381022154137 is 731451220183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 731451220183 = 41 ⋅17840273663.

It can be written as a sum of positive squares in 2 ways, for example, as 347935999321 + 33086154816 = 589861^2 + 181896^2 .

It is a cyclic number.

It is not a de Polignac number, because 381022154137 - 2¹¹ = 381022152089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 381022154096 and 381022154105.

It is not an unprimeable number, because it can be changed into a prime (381022104137) 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, 1747807938 + ... + 1747808155.

It is an arithmetic number, because the mean of its divisors is an integer number (96129442585).

Almost surely, 2^381022154137 is an apocalyptic number.

It is an amenable number.

381022154137 is a deficient number, since it is larger than the sum of its proper divisors (3495616203).

381022154137 is a wasteful number, since it uses less digits than its factorization.

381022154137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3495616202.

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 381022154137 in words is "three hundred eighty-one billion, twenty-two million, one hundred fifty-four thousand, one hundred thirty-seven".