381554473 has 8 divisors (see below), whose sum is σ = 389096136. Its totient is φ = 374025600.

The previous prime is 381554461. The next prime is 381554483. The reversal of 381554473 is 374455183.

It can be written as a sum of positive squares in 4 ways, for example, as 165817129 + 215737344 = 12877^2 + 14688^2 .

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 381554473 - 2²¹ = 379457321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381554423) 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, 76063 + ... + 80923.

It is an arithmetic number, because the mean of its divisors is an integer number (48637017).

Almost surely, 2^381554473 is an apocalyptic number.

It is an amenable number.

381554473 is a deficient number, since it is larger than the sum of its proper divisors (7541663).

381554473 is a wasteful number, since it uses less digits than its factorization.

381554473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6395.

The product of its digits is 201600, while the sum is 40.

The square root of 381554473 is about 19533.4193883201. The cubic root of 381554473 is about 725.3019577704.

The spelling of 381554473 in words is "three hundred eighty-one million, five hundred fifty-four thousand, four hundred seventy-three".