381926897 has 8 divisors (see below), whose sum is σ = 431015040. Its totient is φ = 335233360.

The previous prime is 381926869. The next prime is 381926911. The reversal of 381926897 is 798629183.

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

It is not a de Polignac number, because 381926897 - 2¹⁸ = 381664753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381926837) 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, 598313 + ... + 598950.

It is an arithmetic number, because the mean of its divisors is an integer number (53876880).

Almost surely, 2^381926897 is an apocalyptic number.

It is an amenable number.

381926897 is a deficient number, since it is larger than the sum of its proper divisors (49088143).

381926897 is a wasteful number, since it uses less digits than its factorization.

381926897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197303.

The product of its digits is 1306368, while the sum is 53.

The square root of 381926897 is about 19542.9500587808. The cubic root of 381926897 is about 725.5378629406.

The spelling of 381926897 in words is "three hundred eighty-one million, nine hundred twenty-six thousand, eight hundred ninety-seven".