381154036709 has 4 divisors (see below), whose sum is σ = 382637126604. Its totient is φ = 379670946816.

The previous prime is 381154036699. The next prime is 381154036733. The reversal of 381154036709 is 907630451183.

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 359973600484 + 21180436225 = 599978^2 + 145535^2 .

It is a cyclic number.

It is not a de Polignac number, because 381154036709 - 2¹⁶ = 381153971173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381154036409) 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, 741544562 + ... + 741545075.

It is an arithmetic number, because the mean of its divisors is an integer number (95659281651).

Almost surely, 2^381154036709 is an apocalyptic number.

It is an amenable number.

381154036709 is a deficient number, since it is larger than the sum of its proper divisors (1483089895).

381154036709 is a wasteful number, since it uses less digits than its factorization.

381154036709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483089894.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 381154036709 in words is "three hundred eighty-one billion, one hundred fifty-four million, thirty-six thousand, seven hundred nine".