381354492 has 12 divisors (see below), whose sum is σ = 889827176. Its totient is φ = 127118160.

The previous prime is 381354481. The next prime is 381354497. The reversal of 381354492 is 294453183.

381354492 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

381354492 is strictly pandigital in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 381354492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381354497) 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, 15889759 + ... + 15889782.

Almost surely, 2^381354492 is an apocalyptic number.

It is an amenable number.

381354492 is an abundant number, since it is smaller than the sum of its proper divisors (508472684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381354492 is a wasteful number, since it uses less digits than its factorization.

381354492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31779548 (or 31779546 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The square root of 381354492 is about 19528.2997723816. The cubic root of 381354492 is about 725.1752201142.

The spelling of 381354492 in words is "three hundred eighty-one million, three hundred fifty-four thousand, four hundred ninety-two".