381026109 has 8 divisors (see below), whose sum is σ = 508708960. Its totient is φ = 253680336.

The previous prime is 381026101. The next prime is 381026123. The reversal of 381026109 is 901620183.

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

It is not a de Polignac number, because 381026109 - 2³ = 381026101 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 (381026101) 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, 81619 + ... + 86160.

It is an arithmetic number, because the mean of its divisors is an integer number (63588620).

Almost surely, 2^381026109 is an apocalyptic number.

It is an amenable number.

381026109 is a deficient number, since it is larger than the sum of its proper divisors (127682851).

381026109 is a wasteful number, since it uses less digits than its factorization.

381026109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168539.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 381026109 is about 19519.8900867807. The cubic root of 381026109 is about 724.9670117372.

The spelling of 381026109 in words is "three hundred eighty-one million, twenty-six thousand, one hundred nine".