381400382969 has 4 divisors (see below), whose sum is σ = 381656529780. Its totient is φ = 381144236160.

The previous prime is 381400382927. The next prime is 381400383019. The reversal of 381400382969 is 969283004183.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 156689305600 + 224711077369 = 395840^2 + 474037^2 .

It is a cyclic number.

It is not a de Polignac number, because 381400382969 - 2¹² = 381400378873 is a prime.

It is a super-2 number, since 2×381400382969² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 381400382969.

It is not an unprimeable number, because it can be changed into a prime (381700382969) 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, 128071172 + ... + 128074149.

It is an arithmetic number, because the mean of its divisors is an integer number (95414132445).

Almost surely, 2^381400382969 is an apocalyptic number.

It is an amenable number.

381400382969 is a deficient number, since it is larger than the sum of its proper divisors (256146811).

381400382969 is a wasteful number, since it uses less digits than its factorization.

381400382969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256146810.

The product of its (nonzero) digits is 2239488, while the sum is 53.

The spelling of 381400382969 in words is "three hundred eighty-one billion, four hundred million, three hundred eighty-two thousand, nine hundred sixty-nine".