1904752381 has 16 divisors (see below), whose sum is σ = 2229551104. Its totient is φ = 1593197424.

The previous prime is 1904752379. The next prime is 1904752391. The reversal of 1904752381 is 1832574091.

It is not a de Polignac number, because 1904752381 - 2¹ = 1904752379 is a prime.

It is a super-2 number, since 2×1904752381² = 7256163265850338322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1904752321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 426100 + ... + 430546.

It is an arithmetic number, because the mean of its divisors is an integer number (139346944).

Almost surely, 2^1904752381 is an apocalyptic number.

It is an amenable number.

1904752381 is a deficient number, since it is larger than the sum of its proper divisors (324798723).

1904752381 is a wasteful number, since it uses less digits than its factorization.

1904752381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5920.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 1904752381 is about 43643.4689386625. The cubic root of 1904752381 is about 1239.5941224954.

The spelling of 1904752381 in words is "one billion, nine hundred four million, seven hundred fifty-two thousand, three hundred eighty-one".