1381940241 has 16 divisors (see below), whose sum is σ = 2010979008. Its totient is φ = 837171200.

The previous prime is 1381940239. The next prime is 1381940267. The reversal of 1381940241 is 1420491831.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1381940241 - 2¹ = 1381940239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1381941241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79801 + ... + 95561.

It is an arithmetic number, because the mean of its divisors is an integer number (125686188).

Almost surely, 2^1381940241 is an apocalyptic number.

1381940241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1381940241 is a deficient number, since it is larger than the sum of its proper divisors (629038767).

1381940241 is a wasteful number, since it uses less digits than its factorization.

1381940241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18432.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 1381940241 is about 37174.4568353056. The cubic root of 1381940241 is about 1113.8578102950.

The spelling of 1381940241 in words is "one billion, three hundred eighty-one million, nine hundred forty thousand, two hundred forty-one".