1050381405 has 32 divisors (see below), whose sum is σ = 1872097920. Its totient is φ = 558777600.

The previous prime is 1050381391. The next prime is 1050381407. The reversal of 1050381405 is 5041830501.

1050381405 is a `hidden beast` number, since 10 + 503 + 8 + 140 + 5 = 666.

It is not a de Polignac number, because 1050381405 - 2⁶ = 1050381341 is a prime.

It is a super-2 number, since 2×1050381405² = 2206602191939548050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1050381407) 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, 44434 + ... + 63836.

It is an arithmetic number, because the mean of its divisors is an integer number (58503060).

Almost surely, 2^1050381405 is an apocalyptic number.

1050381405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1050381405 is a deficient number, since it is larger than the sum of its proper divisors (821716515).

1050381405 is a wasteful number, since it uses less digits than its factorization.

1050381405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19818 (or 19812 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 1050381405 is about 32409.5881646157. The cubic root of 1050381405 is about 1016.5194081558.

The spelling of 1050381405 in words is "one billion, fifty million, three hundred eighty-one thousand, four hundred five".