381091733 has 8 divisors (see below), whose sum is σ = 416473920. Its totient is φ = 345832480.

The previous prime is 381091727. The next prime is 381091741. The reversal of 381091733 is 337190183.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 381091733 - 2⁴ = 381091717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 381091693 and 381091702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381091723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24185 + ... + 36702.

It is an arithmetic number, because the mean of its divisors is an integer number (52059240).

Almost surely, 2^381091733 is an apocalyptic number.

It is an amenable number.

381091733 is a deficient number, since it is larger than the sum of its proper divisors (35382187).

381091733 is a wasteful number, since it uses less digits than its factorization.

381091733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61467.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 381091733 is about 19521.5709664975. The cubic root of 381091733 is about 725.0086296238.

Subtracting from 381091733 its product of nonzero digits (13608), we obtain a cube (381078125 = 725³).

The spelling of 381091733 in words is "three hundred eighty-one million, ninety-one thousand, seven hundred thirty-three".