381578901 has 32 divisors (see below), whose sum is σ = 589040640. Its totient is φ = 217430400.

The previous prime is 381578887. The next prime is 381578903. The reversal of 381578901 is 109875183.

It is not a de Polignac number, because 381578901 - 2¹⁰ = 381577877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381578903) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40521 + ... + 49041.

It is an arithmetic number, because the mean of its divisors is an integer number (18407520).

Almost surely, 2^381578901 is an apocalyptic number.

It is an amenable number.

381578901 is a deficient number, since it is larger than the sum of its proper divisors (207461739).

381578901 is a wasteful number, since it uses less digits than its factorization.

381578901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8617.

The product of its (nonzero) digits is 60480, while the sum is 42.

The square root of 381578901 is about 19534.0446656600. The cubic root of 381578901 is about 725.3174359432.

The spelling of 381578901 in words is "three hundred eighty-one million, five hundred seventy-eight thousand, nine hundred one".