381741940 has 12 divisors (see below), whose sum is σ = 801658116. Its totient is φ = 152696768.

The previous prime is 381741931. The next prime is 381741961. The reversal of 381741940 is 49147183.

It can be written as a sum of positive squares in 2 ways, for example, as 167236624 + 214505316 = 12932^2 + 14646^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 381741940.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9543529 + ... + 9543568.

It is an arithmetic number, because the mean of its divisors is an integer number (66804843).

Almost surely, 2^381741940 is an apocalyptic number.

It is an amenable number.

381741940 is an abundant number, since it is smaller than the sum of its proper divisors (419916176).

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

381741940 is a wasteful number, since it uses less digits than its factorization.

381741940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19087106 (or 19087104 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 381741940 is about 19538.2174212491. The cubic root of 381741940 is about 725.4207244904.

The spelling of 381741940 in words is "three hundred eighty-one million, seven hundred forty-one thousand, nine hundred forty".